1. When sodium silicate and hydrochloric acid interact,
1) chlorine and silica 2) sodium sulfate and water
3) silicon oxide and hydrogen 4) silicic acid and sodium chloride
2. Iron(II) sulfide reacts with 1) H 2 SO 4 2) NaOH 3) Na 2 CO 3 4) CuCl 2
3. A solution of iron (II) chloride can react with 1) K 2 S 2) SiO 2 3) NaNO 3 4) CO 2
4. A dilute solution of sulfuric acid reacts with 1) Cu 2) CuCl 2 3) Cu (OH) 2 4) Cu (NO 3) 2
5. Barium chloride does not react with solution 1) H 2 SO 4 2) Na 2 CO 3 3) AgNO 3 4) KOH
6. Both ammonium chloride and zinc nitrate can interact with
o 3) sulfuric acid solution 4) iron
7. It reacts with both sodium carbonate solution and barium nitrate solution
o 1) CaCl 2 2) MgSO 4 3) AgNO 3 4) K 2 SO 4
8. Among the salts, the formulas of which are: CaCl 2, CuS, NaBr, K 2 SO 4, react with a solution of lithium carbonate 1) only CaCl 2 2) CaCl 2 and CuS 3) CaCl 2 , CuS and NaBr 4) all the given salts
9. Magnesium carbonate reacts with 1) NaOH 2) H 2 SO 4 3) ZnCl 2 4) K 3 PO 4
10. Each of the two substances reacts with iron (III) nitrate:
o 1) BaCl 2 and N 2 2) KOH and Mg 3) Al 2 (SO 4) 3 and O 2 4) H 3 PO 4 and Cu
11. Reacts with a solution of zinc nitrate 1) magnesium oxide 2) carbon monoxide (II)
o 3) barium sulfate 4) sodium hydroxide
12. Barium nitrate solution reacts with 1) FeCl 3 2) CuSO 4 3) Zn(OH) 2 4) KBr
13. The interaction of iron (II) sulfate and barium nitrate forms
o 1) barium hydroxide and iron(II) sulfide 2) sulfur(VI) oxide and iron(II) oxide
o 3) barium sulfate and iron(II) nitrate 4) nitric acid and barium sulfite
14. Calcium carbonate reacts with 1) nitric acid 2) lithium hydroxide
3) sodium chloride 4) ammonia
15. Barium carbonate reacts with a solution of 1) potassium hydroxide 2) sodium chloride
o 3) barium nitrate 4) hydrochloric acid
16. A solution of iron (III) chloride reacts with each of the two substances:
o 1) Si and NaOH 2) Zn and K 3 PO 4 3) Cu and H 2 SO 4 4) Mg and BaCO 3
17. Which of the following substances: Cu, CuO, Cu (OH) 2, CuSO 4 - enter
react with dilute hydrochloric acid?
1) Cu and CuO 2) CuO and Cu(OH) 2 3) Cu(OH) 2 and CuSO 4 4) all of the listed substances
18. Gas is released when hydrochloric acid reacts with
o 1) NaOH 2) BaCO 3 3) NH 4 Br 4) AgNO 3
19. Salt formula that reacts with both barium chloride and potassium hydroxide
o 1) NaNO 3 2) CuSO 4 3) CaCO 3 4) ZnBr 2
20. The formula of a salt that can react in an aqueous solution with both sulfuric acid and silver nitrate 1) CuCl 2 2) Fe 2 (SO 4) 3 3) NaF 4) BaBr 2
21. 1) BaCl 2 2) Fe (NO 3) 3 3) Na 2 S 4) Li 3 PO 4 reacts with a solution of potassium hydroxide
22. Sodium sulfate reacts with 1) KOH 2) Ba (OH) 2 3) NaCl 4) H 2 CO 3
23. Reacts with both calcium hydroxide and silver nitrate
o 1) ammonium chloride 2) barium sulfate 3) magnesium carbonate 4) sodium nitrate
24. Reacts with sodium silicate 1) K 3 PO 4 2) NaOH 3) HCl 4) Cu
25. Copper (II) sulfate is formed by the interaction of dilute sulfuric acid with
o 1) Cu 2) Cu(NO 3) 2 3) CuCl 2 4) Cu(OH) 2
26. In the interaction of solutions of aluminum chloride and silver nitrate,
o 1) AgCl and Al (NO 3) 3 2) Ag 2 O, Cl 2 and Al (NO 3) 3 3) AgCl, Al 2 O 3 and NO 2 4) Ag, NO 2 and Cl 2
27. With copper(II) sulfate solution does not react 1) zinc 2) silver 3) iron 4) tin
o 28. Zinc chloride solution reacts with each of the two substances:
o 1) C and H 2 SO 4 2) Mg and KOH 3) Cu and AlPO 4 4) Fe and CaCO 3
29. Copper (II) nitrate solution can interact
o 1) zinc 2) iron(III) hydroxide 3) silicon(IV) oxide 4) carbon
30. Barium sulfate can be obtained by the reaction of barium nitrate with
1) sulfur oxide (IV) 2) sulfurous acid 3) hydrogen sulfide 4) potassium sulfate
31. Between what substances does it flow chemical reaction?
o 1) magnesium chloride and zinc nitrate 2) calcium carbonate and nitric acid
o 3) sodium silicate and potassium hydroxide 4) barium phosphate and lead sulfide
32. Each of the three salts - Na 2 CO 3, K 3 PO 4 and AgNO 3 - reacts with
o 1) copper 2) nitric acid 3) calcium chloride 4) potassium hydroxide
33. Aluminum sulfate reacts with each of the two substances:
o 1) BaCl 2 and KOH 2) NaCl and Cu (OH) 2 3) Ba (NO 3) 2 and HNO 3 4) Na 3 PO 4 and HCl
34. Reacts with a solution of zinc chloride 1) H 2 SO 4 2) NaOH 3) AlCl 3 4) Cu
35. Reacts with a solution of calcium nitrate 1) ZnCl 2 2) K 2 CO 3 3) CO 4) CuO
36. In the interaction of solutions of sodium silicate and hydrochloric acid, atrium chloride and 1) SiH 4, O 2 2) SiO 2, H 2 3) H 2 SiO 3 4) Si, H 2 O
37. Copper (II) sulfate reacts with each of the two substances:
o 1) Fe and BaCl 2 2) Na 2 CO 3 and NaCl 3) FeSO 4 and Al (NO 3) 3 4) NaOH and HCl
38. Potassium carbonate solution reacts with 1) Ca(OH) 2 2) KCl 3) Fe(OH) 2 4) Na 2 SO 4
39. Reacts with a solution of iron (III) chloride
o 1) calcium silicate 2) barium sulfate 3) potassium phosphate 4) zinc oxide
40. Salt formula that can react with both sulfuric acid and silver nitrate
1) NaF 2) Cu(NO 3) 2 3) MgCl 2 4) BaBr 2
41. Iron(II) sulfate solution does not react c 1) Ba(NO 3) 2 2) CuCl 2 3) Na 2 S 4) K 2 CO 3
42. Reacts with a solution of copper (II) chloride
o 1) sulfuric acid 2) iron(III) hydroxide 3) potassium hydroxide 4) potassium chloride
43. Reacts with a solution of magnesium chloride 1) AgNO 3 2) CuO 3) O 2 4) Na 2 SO 4
44. Reacts with a solution of copper (II) sulfate 1) AlCl 3 2) SiO 2 3) Fe 4) CuO
45. Reacts with sodium silicate solution
o 1) zinc oxide 2) potassium hydroxide 3) sulfuric acid 4) sodium nitrate
46. Substitution reaction with lead nitrate enters 1) hydrogen 2) iron 3) copper 4) silver
47. Both barium chloride and calcium carbonate react with
o 1) copper 2) sulfuric acid 3) oxygen 4) sodium hydroxide
48. Zinc displaces metal from solution
o 1) potassium nitrate 2) calcium nitrate 3) copper(II) sulfate 4) magnesium sulfate
49. Reacts with a solution of potassium carbonate
o 1) magnesium oxide 2) carbon monoxide (II) 3) copper (II) hydroxide 4) nitric acid
50. Magnesium sulfate in solution interacts with each of the two substances
o) KOH and BaCl 2 2) Na 2 CO 3 and HCl 3) Ba (NO 3) 2 and HNO 3 4) Cu, and Cu (OH) 2
51. Reacts with a solution of copper sulfate (II) 1) Fe (OH) 3 2) Zn 3) H 2 SiO 3 4) MgO
52. Reacts with sodium phosphate solution 1) Fe(OH) 3 2) AgNO 3 3) H 2 SiO 3 4) MgO
53. Calcium carbonate can be obtained as a result of the reaction of calcium nitrate with
o 1) carbon monoxide (II) 2) copper carbonate (II)
o 3) potassium carbonate 4) carbon
54. Calcium carbonate reacts with 1) K 2 O 2) HCl 3) Al (OH) 3 4) Na 2 SO 4
55. Zinc chloride reacts with each of two substances:
o 1) Ba (NO 3) 2 and KOH 2) Na 3 PO 4 and O 2 3) Cu and Na 2 SO 4 4) AgNO 3 and NaOH
56. Between what substances in solution interaction is possible?
o 1) Na 2 CO 3 and H 3 PO 4 2) Ba (NO 3) 2 and HCl 3) Cu (NO 3) 2 and H 2 SO 4 4) BaCl 2 and HNO 3
57. Among the salts, the formulas of which are: CuSO 4, (NH 4) 2 S, KNO 3, Na 3 PO 4, react with a solution of iron (III) chloride 1) only CuSO 4 2) CuSO 4 and (NH 4) 2 S
3) (NH 4) 2 S and Na 3 PO 4 4) all salts given
58. Which of the following substances interacts with sodium phosphate solution?
o 1) iron 2) potassium hydroxide 3) silver nitrate 4) silicic acid
59. Copper(II) sulfate solution does not react with solution
1) potassium hydroxide 2) nitric acid 3) sodium carbonate 4) ammonium phosphate
60. Sodium phosphate solution reacts with each of two substances:
o 1) AgNO 3 and Ca (OH) 2 2) H 2 SO 4 and KOH 3) BaCO 3 and HNO 3 4) FeCl 3 and MgSiO 3
61. Zinc sulfate is formed as a result of the interaction
o 1) Na 2 SO 4 and Zn (OH) 2 2) ZnCl 2 and H 2 S 3) CuSO 4 and Zn 4) Ca (NO 3) 2 and ZnO
62. Iron(III) sulfate interacts with each of the two substances
o 1) Cu, HCl 2) KOH, Zn 3) NaNO 3, O 2 4) H 2 SO 4, CaO
63. Sodium carbonate solution can interact with 1) NaOH 2) CaCl 2 3) Fe 4) K 2 SiO 3
64. Reacts with a solution of silver nitrate 1) CuS 2) SiO 2 3) FeO 4) K 3 PO 4
65. Between what substances interaction is possible?
o 1) Na 2 SO 4 and BaCl 2 2) MgCO 3 and Zn 3) K 2 SiO 3 and CaO 4) KCl and H 3 PO 4
66. It is practicable to react between
o 1) Ba (NO 3) 2 and NaOH 2) ZnSO 4 and Ag 3) Na 2 SO 4 and CaCO 3 4) KBr and Cl 2
67. The formula of a salt that in an aqueous solution can react with both barium chloride and potassium hydroxide 1) AlBr 3 2) NaNO 3 3) Na 2 SO 3 4) Fe 2 (SO 4) 3
68. 1) lead 2) magnesium 3) carbon monoxide (IV) 4) iron oxide (III) reacts with a solution of zinc nitrate
69. Reacts with a solution of iron (III) chloride 1) CO 2 2) Ba (OH) 2 3) Ag 4) Na 2 SO 4
70. What substance can interact in an aqueous solution with both sodium sulfide and lead nitrate? 1) HI 2) HNO 3 3) KOH 4) CaCO 3
71. Reacts with ammonium carbonate solution 1) hydrochloric acid 2) sodium nitrate
3) calcium phosphate 4) iron(II) hydroxide
72. Zinc nitrate solution can react with 1) HCl 2) Ag 3) NaOH 4) NH 4 Cl
73. Iron(II) sulfide reacts with 1) H 2 SO 4 2) NaOH 3) Na 2 CO 3 4) CuCl 2
74. Silver nitrate solution reacts with 1) KBr 2) CuO 3) BaSO 4 4) CaCO 3
75. Under the action of which of the following salts on a solution of copper sulfate not formed sediment?
o 1) Ba(NO 3) 2 2) ZnCl 2 3) Na 3 PO 4 4) K 2 CO 3
76. Both ammonium nitrate and zinc nitrate can interact with
o 1) potassium hydroxide 2) sodium chloride solution
o 3) dilute sulfuric acid solution 4) iron
77. Barium chloride solution reacts with 1) AgNO 3 2) NaOH 3) CuS 4) HNO 3
78. Between what substances interaction is possible?
o 1) AlCl 3 and Cu(OH) 2 2) AgCl and Ba(NO 3) 2 3) ZnSO 4 and HCl 4) ZnS and HNO 3
79. Practically feasible reaction between a solution of zinc chloride and
o 1) iron 2) copper 3) lead 4) aluminum
80. Reacts with a solution of potassium carbonate 1) HCl 2) Na 2 SO 4 3) KOH 4) O 2
81. 1) AlPO 4 2) BaCl 2 3) NaNO 3 4) K 2 CO 3 reacts with a solution of calcium hydroxide
82. A solution of copper (II) sulfate reacts with 1) iron oxide (II) 2) mercury
3) potassium hydroxide 4) aluminum nitrate
83. In the interaction of copper (II) sulfate and lithium hydroxide,
o 1) water and lithium sulfite 2) copper(II) oxide and sulfur(IV) oxide
o 3) copper (II) hydroxide and lithium sulfate 4) lithium sulfide and copper
84. Unlike potassium sulfate, zinc sulfate reacts with 1) BaCl 2 2) AgNO 3 3) NaOH 4) HCl
85. Zinc sulfate solution reacts with 1) BaCl 2 2) Al(OH) 3 3) HCl 4) Cu(OH) 2
86. Iron(III) chloride is formed as a result of the interaction of iron with
o 1) hydrogen chloride 2) copper (II) chloride solution
o 3) aluminum chloride 4) chlorine
87. Between what substances interaction is possible?
1) NH 4 NO 3 and Al 2 (SO 4) 3 2) BaCl 2 and KOH 3) Ba (NO 3) 2 and NaCl 4) NH 4 Cl and Ba (OH) 2
88. 1) calcium hydroxide 2) sulfuric acid 3) barium nitrate 4) silver reacts with ammonium chloride
89. Among the substances: NaCl, Na 2 S, Na 2 SO 4 - reacts with a solution of Cu (NO 3) 2 enters (-s)
o 1) only Na 2 S 2) NaCl and Na 2 S 3) Na 2 S and Na 2 SO 4 4) NaCl and Na 2 SO 4
90. Reacts with a solution of barium bromide 1) ZnCl 2 2) KI 3) FeO 4) Cl 2
91. Copper (II) chloride in an aqueous solution reacts with 1) Na 2 SO 4 2) HBr 3) Ca (NO 3) 2 4) K 2 S
92. When copper (II) chloride reacts with sodium hydroxide, in addition to sodium chloride, 1) copper (II) oxide and hydrogen 2) water and copper (II) oxide 3) copper (II) hydroxide 4) copper are formed and water
93. The interaction of copper(II) sulfate with zinc leads to the formation
1) sulfur 2) water 3) copper 4) oxygen
94. Reacts with zinc sulfate solution
1) lead 2) carbon 3) silicon oxide 4) potassium hydroxide
95. 1) silver 2) mercury 3) sulfur 4) reacts with copper(II) sulfate solution
96. With each of the listed substances - Fe, NaOH, BaS - reacts
1) Ca(NO 3) 2 2) KCl 3) Cu(NO 3) 2 4) MgSiO 3
97. Each of the two substances can interact with a solution of copper (II) sulfate:
o 1) Zn and Al(OH) 3 2) Ag and NaOH 3) Fe and Ba(OH) 2 4) Al and Fe(OH) 2
98. Solutions of sodium sulfate and sodium carbonate interact with
1) barium chloride 2) nitric acid 3) zinc hydroxide 4) aluminum phosphate
99. Sodium carbonate does not react c 1) ZnCl 2 2) HCl 3) Ca(NO 3) 2 4) K 2 SO 4
100. Between what substances interaction is possible?
o 1) CaCl 2 and NH 4 NO 3 2) BaCl 2 and CuSO 4 3) AlCl 3 and Na 2 SO 4 4) AgCl and HNO 3
101. Reacts with a solution of potassium chloride
1) iron(III) oxide 2) carbon dioxide 3) copper(II) hydroxide 4) silver nitrate
102. Copper (II) nitrate reacts with 1) carbon monoxide (IV) 2) calcium hydroxide
3) iron(II) chloride 4) hydrochloric acid
103. You can carry out the transformation CuCl 2 → CuS using
o 1) sulfur 2) sulfur oxide (IV) 3) sulfuric acid 4) sodium sulfide
104. Zinc chloride in aqueous solution reacts with 1) H 2 SO 4 2) CaBr 2 3) K 3 PO 4 4) Cu(NO 3) 2
105. Reacts with each of the solutions of CuSO 4 and Na 2 CO 3
1) hydrochloric acid 2) sodium hydroxide 3) barium chloride 4) aluminum nitrate
106. 1) zinc 2) silver 3) mercury 4) copper reacts with a solution of lead (II) nitrate
107. Salt formula that reacts with both hydrochloric acid and calcium nitrate
1) CuSO 4 2) KBr 3) BaSO 4 4) Na 2 CO 3
108. The interaction of copper(II) sulfate and zinc produces
1) sulfur and zinc oxide 2) copper and zinc sulfate 3) water and zinc sulfide 4) zinc oxide and copper sulfide
109. When sodium silicate and hydrochloric acid interact, they form
1) carbon and sulfuric acid 2) zinc and oxygen
3) carbon dioxide and carbon 4) oxygen and chlorine
A14. Dilute sulfuric acid reacts with each of the two metals
1) Cu, Na 2) Ag, Mg 3) Zn, Mg 4) Zn, Ag
A15. The reaction of dilute nitric acid with aluminum corresponds to the equation
1) Al + 4HNO 3 \u003d Al (NO 3) 3 + NO + 2H 2 O
2) 2 Al + 6HNO 3 \u003d 2Al (NO 3) 3 + 3H 2
3) 4Al + 18HNO 3 \u003d 4Al (NO 3) 3 + 3N 2 O + 9H 2 O
4) Al + 4HNO 3 = Al(NO 3) 3 + NO 2 + 2H 2 A16. When a solution of calcium bicarbonate is heated
1) only gas is formed
2) only a precipitate is formed
3) both gas and precipitate are formed
4) the color of the solution changes
A17. Sodium dihydrogen phosphate interacts
1) NaCl 2) NO 3) KOH 4) H 3 PO 4
A18. The number of hydroxides among the listed substances:
Zn (OH) 2, Ca (OH) 2, H 2 SO 4, Ba (NO 3) 2, H 3 PO 4, CuO, LiOH, Mn (OH) 2
equals: 1) 3 2) 4 3) 5 4) 6
A19. To dissolve both silver and iron, use
1) concentrated sulfuric acid
2) dilute nitric acid
3) dilute hydrochloric acid
4) potassium hydroxide solution
A20. Under the action of an excess of sodium hydroxide solution on a solution of sulfate
aluminum is formed
1) Al 2 O 3 2) Al(OH) 3 3) NaAlO 2 4) Na
A21. Both with a solution of sodium hydroxide and with a solution of barium nitrate interacts
1) lead (II) chloride 2) calcium carbonate
3) potassium phosphate 4) tin sulfate (II)
A22. Basic hydroxides include each of the two substances
1) Fe(OH) 3 and KOH 2) Fe(OH) 3 and Cr(OH) 3
3) Fe(OH) 3 and Cr(OH) 2 4) Fe(OH) 2 and Cr(OH) 2
A23. Oxides SiO 2 and Al 2 O 3 are
1) acidic and basic
2) basic and amphoteric
3) amphoteric and non-salt-forming
4) acidic and amphoteric
A24. The strongest acid properties has
1) H 2 SO 3 2) HNO 2 3) HClO 4 4) H 2 SiO 3
A25. All substances of the group react with copper (II) sulfate
1) manganese, barium nitrate, potassium acetate
2) hydrochloric acid, potassium hydroxide, zinc
3) calcium carbonate, magnesium, nitric acid
4) sodium hydroxide, barium chloride, iron
A26. An oxide that, when heated, can react with hydrogen, but does not react with oxygen
1) WO 3 2) FeO 3) CO 4) NO
A27. Salt that can react with both sulfuric acid and barium hydroxide in aqueous solution
1) Cu(NO 3) 2 2) Na 2 CO 3 3) KMnO 4 4) NH 4 Cl
A28. Basic salts are presented in the group
1) C 3 H 7 OH, NaOH 2) Ca (HCO 3) 2, Ca (OH) 2
3) CuOHCl, (CuOH) 2 CO 3 4) NH 4 Cl, HCOONH 4
A29. Are the following statements about amphoteric oxides correct?
A. All amphoteric oxides are highly soluble in water.
B. Amphoteric oxides interact with both acids and bases
1) only A is true 2) only B is true
3) both statements are true 4) both statements are false
A30. Hydrochloric acid dissolves each of the two substances
1) SiO 2, Zn 2) CaCO 3, Fe 3) CuO, Ag 4) BaSO 4, P
Part B. The answer to the level B task (part 2 of the USE) is the sequence
numbers, in tasks for establishing correspondence, you need to write down the numbers of your chosen answers in correct sequence
IN 1. Establish a correspondence between the oxide formula and the formulas of substances, with each of which it can interact.
Oxide formula Substance formulas
A) CO 1) H 2 S, NaOH, O 2
B) CuO 2) H 2, HCl, C
C) SiO 2 3) O 2, Ni, FeO
D) SO 2 4) H 2 O, H 2 SO 4, Cl 2
5) Na 2 CO 3, HF, Mg
6) NaNO 3 , HCl, N 2
AT 2. Match the reactants with the reaction products.
Reacting substances Reaction products
A) FeSO 4 + KOH 1) Fe (OH) 3 + K 2 SO 4
B) Fe 2 (SO 4) 3 + KOH 2) Fe (OH) 2 + K 2 SO 4
C) FeSO 4 + BaCl 2 3) FeCl 3 + BaSO 4
D) FeSO 4 + K 2 S 4) FeCl 2 + BaSO 4
5) FeS + K 2 SO 4
6) FeS + S + K 2 SO 4
AT 3. Copper (II) chloride in aqueous solution reacts with
AT 4. Set the correspondence between the formula of the substance and the class (group)
Not organic compounds to which it belongs
Substance formula Class (group) of compounds
A) Cu (OH) 2 1) average salt
B) (CuOH) 2 CO 3 2) basic salt
B) NaHSO 3 3) base
D) SO 2 4) acid salt
5) acid oxide
AT 5. Establish a correspondence between the formulas of two substances and the name of the reagent,
with whom they can interact
Substance formulas Reagent name
A) HBr and NaI 1) potassium hydroxide
B) BaCl 2 and Cu (OH) 2 2) sulfuric acid (diff)
B) Al (NO 3) 3 and Zn (OH) 2 3) chlorine
D) Zn (NO 3) 3 and HNO 3 4) sodium nitrate
5) lead (II) sulfide
Part C. The answer to the task of level C (part 3 of the USE) is a complete and detailed solution to the task.
C1. Calculate the mass of sodium that must be added to 200 g of a 10% sodium hydroxide solution so that the mass fraction of sodium hydroxide is 16%.
C2. The ammonia liberated by heating a mixture of 26.4 g of ammonium sulfate and 37 g of calcium hydroxide was dissolved in water. What volume of a sulfuric acid solution with a mass fraction of 9.8% (density 1.05 g/ml) is required to neutralize the resulting solution?
C3. Determine the mass fractions (in%) of iron (II) sulfate and aluminum sulfide in the mixture, if during the treatment of 25 g of this mixture with water a gas was released that completely reacted with 960 g of a 5% copper sulfate solution.
FULL NAME.__________________________________________________
Answer sheet. Control No. 4.
Topic: "Main classes of organic compounds"
Part A. When completing tasks of level A, you must choose one correct answer from the four offered. Enter the correct answers in the table (put an "x" sign to the number of the answer you have chosen.). Corrections are prohibited.
| A | A | A | A | A | A | A | A | A | A | A | A | A | A | A | |
| X | |||||||||||||||
| X | |||||||||||||||
| X |
| A | A | A | A | A | A | A | A | A | A | A | A | A | A | A | |
Part B. The answer to tasks of level B is a sequence of numbers
Chemical properties of medium salts
1. Lithium chloride solution reacts with
3)Ba(NO3)2 4)MgSO4
2. Solutions of sodium sulfate and sodium carbonate interact with
3. A solution of barium chloride reacts with
4. The interaction of copper (II) sulfate with zinc leads to the formation
1) sulfur 2) water
3)copper 4)oxygen
5. Between what substances is interaction possible?
1)AlCl3 and Cu(OH)2 2)AgCl and Ba(NO3)2
3) ZnSO4 and HCl 4) ZnS and HNO3
6. During the interaction of copper (II) sulfate and zinc,
1)sulfur and zinc oxide
2)copper and zinc sulfate
3)water and zinc sulfide
4)zinc oxide and copper sulfide
7. Reacts with a solution of barium bromide
1)ZnCl2 2)KI 3)FeO 4)Cl2
8. Iron(II) sulfide reacts with
1)H2SO4 2)NaOH 3)Na2CO3 4)CuCl2
9. It is possible to carry out the transformation Pb (NO3) 2 → PbS using
1) sodium sulfide 2) sulfur oxide (IV)
3) potassium sulfite 4) sulfurous acid
10. Reacts with a solution of barium nitrate
1) iron (III) sulfate 2) sodium hydroxide
3) copper (II) chloride 4) silicic acid
11. What substance can interact in an aqueous solution with both potassium carbonate and silver nitrate?
1) HCl 2) HNO3 3) NaBr 4) ZnF2
12. Barium sulfate can be obtained by the reaction of barium nitrate with
1) sulfur oxide (IV) 2) sulfurous acid
3) hydrogen sulfide 4) potassium sulfate
13. In the interaction of solutions of iron (III) chloride and sodium hydroxide,
1) NaCl and Fe(OH)2 2) NaCl and Fe(OH)3
3) NaCl, Fe2O3 and H2 4) Na2O, Fe2O3 and HCl
14. You can carry out the transformation CuCl2 → CuS using
1) sulfur 2) sulfur oxide (IV)
3) sulfuric acid 4) sodium sulfide
15. Reacts with a solution of calcium nitrate
1) ZnCl2 2) K2CO3 3) CO 4) CuO
16. Practically feasible reaction between a solution of zinc chloride and
1) iron 2) copper
3) lead 4) aluminum
17. Between what substances is interaction possible?
1)NH4NO3 and Al2(SO4)3 2)BaCl2 and KOH
3)Ba(NO3)2 and NaCl 4)NH4Cl and Ba(OH)2
18. Practically feasible is the reaction between
1)Ba(NO3)2 and NaOH 2)ZnSO4 and Ag
3) Na2SO4 and CaCO3 4) KBr and Cl2
19. Reacts with sodium silicate solution
1)zinc oxide
2) potassium hydroxide
3) sulfuric acid
4) sodium nitrate
20. Reacts with a solution of zinc chloride
1)H2SO4 2)NaOH 3)AlCl3 4)Cu
21. A chemical reaction is possible between
1)CO2 and HNO3 2)CaO and H2O
3) SiO2 and O2 4) MgO and NaOH
22. Magnesium carbonate reacts with
1)NaOH 2)H2SO4 3)ZnCl2 4)K3PO4
23. Each of the two substances reacts with a solution of iron (III) chloride:
1)Cu(NO3)2 and Zn 2)AgNO3 and Ba(OH)2
3) Na2SO4 and CuO 4) K2S and Ag
24. Reacts with a solution of zinc nitrate
1) lead 2) magnesium
3) carbon monoxide (IV)
4) iron(III) oxide
25. Reacts with a solution of copper (II) sulfate
1) silver 2) mercury
3) sulfur 4) magnesium
26. Magnesium carbonate reacts with
1) sodium hydroxide 2) silver nitrate
3) potassium chloride 4) hydrochloric acid
27. Reacts with a solution of potassium carbonate
3) copper (II) hydroxide 4) nitric acid
28. Each of the two substances can interact with a solution of copper (II) sulfate:
1) Zn and Al(OH)3 2) Ag and NaOH
3)Fe and Ba(OH)2 4)Al and Fe(OH)2
29. Potassium carbonate solution reacts with
1)Ca(OH)2 2)KCl
3)Fe(OH)2 4)Na2SO4
30. Unlike potassium sulfate, zinc sulfate reacts with
1)BaCl2 2)AgNO3 3)NaOH 4)HCl
31. A solution of iron (III) sulfate reacts with
1)Cu 2)SiO2 3)NaOH 4)ZnCl2
32. Calcium carbonate reacts with
1)K2O 2)HCl 3)Al(OH)3 4)Na2SO4
33. Zinc chloride in aqueous solution reacts with
3)K3PO4 4)Cu(NO3)2
34. Reacts with a solution of calcium nitrate
1) copper 2) hydrochloric acid
3) silicon oxide 4) sodium carbonate
35. Reacts with a solution of iron (III) chloride
1) calcium silicate 2) barium sulfate
3) potassium phosphate 4) zinc oxide
36. In the interaction of solutions of sodium silicate and hydrochloric acid, sodium chloride is formed and
1) SiH4, О2 2) SiO2, H2
3)H2SiO3 4)Si, H2O
37. A solution of silver nitrate reacts with
1)KBr 2)CuO 3)BaSO4 4)CaCO3
38. Among the salts, the formulas of which are:
СuCl2, Na3PO4, ZnSO4, Li2CO3,
react with calcium hydroxide solution
1) only CuCl2
2) СuCl2 and Na3PO4
3) СuCl2, Na3PO4 and ZnSO4
4) all given salts
39. When copper (II) chloride reacts with sodium hydroxide, in addition to sodium chloride,
2) water and copper(II) oxide
3) copper(II) hydroxide
4)copper and water
40. With the formation of carbon dioxide, sodium carbonate reacts with
1) barium hydroxide 2) potassium hydroxide
3) silicic acid 4) hydrochloric acid
41. Salt formula that reacts with both hydrochloric acid and calcium nitrate
1)CuSO4 2)KBr 3)BaSO4 4)Na2CO3
41. With each of the listed substances: NaOH, Mg, H2S - reacts
1)K3PO4 2)BaCl2 3)CuSO4 4)CaS
42. Reacts with a solution of potassium carbonate
1)HCl 2)Na2SO4 3)KOH 4)O2
43. What substances can interact between?
1)CaCl2 and NH4NO3 2)BaCl2 and CuSO4
3) AlCl3 and Na2SO4 4) AgCl and HNO3
44. Among the substances: CaCO3, Ba(NO3)2, CuSO4, - reacts with hydrochloric acid
1)CaCO3 only 2)CaCO3 and Ba(NO3)2
3)CaCO3 and CuSO4 4)Ba(NO3)2 and CuSO4
45. Sodium iodide in an aqueous solution reacts with
1)Pb(NO3)2 2)Ca(NO3)2
46. Reacts with a solution of copper (II) sulfate
1)AlCl3 2)SiO2 3)Fe 4)CuO
47. Zinc sulfate solution reacts with
1)BaCl2 2)Al(OH)3
48. Reacts with a solution of lead (II) nitrate
1) zinc 2) silver
3) mercury 4) copper
49. Between what substances is interaction possible?
1) sodium phosphate and silicic acid
2) silver chloride and barium nitrate
3) copper (II) sulfate and sodium hydroxide
4) calcium silicate and carbon monoxide (IV)
50. Sodium carbonate does not react With
1)ZnCl2 2)HCl 3)Ca(NO3)2 4)K2SO4
51. Reacts with a solution of copper (II) sulfate
1)Fe(OH)32)Zn 3)H2SiO3 4)MgO
52. A solution of potassium phosphate reacts with
1)KOH 2)CaCl2 3)Na2CO3 4)BaSO4
53. Each of the three salts - Na2CO3, K3PO4 and AgNO3 - reacts with
1) copper 2) nitric acid
3) calcium chloride 4) potassium hydroxide
54. Potassium carbonate reacts with
1) iron 2) calcium nitrate
3) sulfur oxide (IV) 4) oxygen
55. Among the substances: NaCl, Na2S, Na2SO4 - reacts with a solution of Cu (NO3) 2 enters (-s)
1) only Na2S 2) NaCl and Na2S
3) Na2S and Na2SO4 4) NaCl and Na2SO4
56. Reacts with both calcium hydroxide and silver nitrate
3) magnesium carbonate 4) sodium nitrate
57. Between what substances interaction is possible?
1) potassium sulfate and nitric acid
2) iron(II) nitrate and copper
3) sodium chloride and potassium silicate
4)ammonium phosphate and sodium hydroxide
58. Under the action of which of the following salts on a solution of copper sulfate not formed sediment?
1)Ba(NO3)2 2)ZnCl2
3)Na3PO4 4)K2CO3
59. Reacts with a solution of zinc nitrate
1) magnesium oxide 2) carbon oxide (II)
3) barium sulfate 4) sodium hydroxide
60. When copper (II) sulfate and lithium hydroxide react, they form
1)water and lithium sulfite
2) copper(II) oxide and sulfur(IV) oxide
3) copper (II) hydroxide and lithium sulfate
4)lithium sulfide and copper
61. Reacts with a solution of sodium chloride
1) silver nitrate 2) oxygen
3) hydrogen 4) barium hydroxide
62. Sodium sulfate reacts with
1) KOH 2) Ba (OH) 2 3) NaCl 4) H2CO3
63. Reacts with sodium silicate
1) K3PO4 2) NaOH 3) HCl 4) Cu
64. Reacts with both potassium chloride and hydrochloric acid
1) silver nitrate 2) sodium sulfate
3) calcium carbonate 4) ammonium phosphate
65. Reacts with a solution of zinc sulfate
1) lead 3) silicon oxide
2) carbon 4) potassium hydroxide
66. Reacts with a solution of potassium chloride
1) iron oxide (III) 2) carbon dioxide
3) copper (II) hydroxide 4) silver nitrate
67. Barium chloride does not react with solution
1)H2SO4 2)Na2CO3 3)AgNO3 4)KOH
68. Reacts with a solution of silver nitrate
1)CuS 2)SiO2 3)FeO 4)K3PO4
69. Zinc chloride reacts with each of two substances:
1)Ba(NO3)2 and KOH 2)Na3PO4 and O2
3) Cu and Na2SO4 4) AgNO3 and NaOH
70. Each of the two salts reacts with dilute sulfuric acid:
1) NaNO3, K2CO3 2) ВaCl2, Na2S
3)NH4Cl, MgSO4 4)FeCl3, BaCO3
71. The formula of a salt that can react with both sulfuric acid and silver nitrate
1)NaF 2)Cu(NO3)2 3)MgCl2 4)BaBr2
72. Reacts with copper (II) nitrate
1) carbon monoxide (IV) 2) calcium hydroxide
3) iron(II) chloride 4) hydrochloric acid
73. Reacts with each of the CuSO4 and Na2CO3 solutions
1) hydrochloric acid 2) sodium hydroxide
3) barium chloride 4) aluminum nitrate
74. The formula of a salt that can react with both sulfuric acid and silver nitrate in an aqueous solution
1)CuCl2 2)Fe2(SO4)3
75. Reacts with a solution of potassium carbonate
1) magnesium oxide
2) carbon monoxide (II)
3) copper(II) sulfide
4) nitric acid
A12 oge 2016 | ||||||
Task number 1
Each of the two substances interacts with a solution of sulfuric acid:
1) barium chloride and carbon monoxide (IV)
2) magnesium and barium chloride
3) sodium chloride and phosphoric acid
4) copper and potassium hydroxide
Answer: 2
Explanation:
Barium chloride BaCl 2 reacts with a solution of sulfuric acid to form barium sulfate BaSO 4, which is insoluble in water and acids:
BaCl 2 + H 2 SO 4 \u003d BaSO 4 ↓ + 2HCl
Carbon dioxide does not interact with a solution of sulfuric acid, since carbon is in the most oxidized form with an oxidation state of +4 and sulfur no longer oxidizes it.
The reaction of replacing magnesium with hydrogen of sulfuric acid proceeds as follows:
Mg + H 2 SO 4 (solution) \u003d MgSO 4 + H 2
Hydrogen in acid is able to replace magnesium, since in the electrochemical series of voltages of metals, magnesium is to the left of hydrogen and, therefore, is more active.
A solution of sulfuric acid does not react with NaCl, since neither precipitates nor gases are formed during the reaction, i.e. in solution, hydrogen and sodium cations and SO 4 2− and Cl − anions coexist.
Sulfuric acid also does not interact with phosphoric acid (no acid-base interaction), both acids freely coexist in solution in the form of ions.
Copper, standing in the electrochemical series of voltages of metals after hydrogen, is able to interact only with concentrated sulfuric acid due to the oxidizing ability of sulfur. The reaction proceeds due to the oxidation of copper to the oxidation state +2 and the evolution of sulfur dioxide SO 2:
Cu + 2H 2 SO 4 \u003d CuSO 4 + SO 2 + 2H 2 O
Task number 2
Concentrated nitric acid under normal conditions does not interact with
1) magnesium
2) sodium hydroxide
3) iron
4) magnesium oxide
Answer: 3
Explanation:
Aqueous solutions with a mass fraction of nitric acid HNO 3 more than 60% is called concentrated nitric acid. Concentrated nitric acid reacts with metals located in the voltage series to the left of hydrogen as follows (using magnesium as an example):
Mg + 4HNO 3 (60% p - p) \u003d Mg (NO 3) 2 + 2NO 2 + 2H 2 O
With sodium hydroxide NaOH, nitric acid, regardless of concentration, enters into an acid-base interaction (neutralization reaction):
NaOH + HNO 3 \u003d NaNO 3 + H 2 O
In metal oxide (basic oxide) MgO, nitric acid also, regardless of concentration, enters into an acid–base interaction (exchange reaction):
MgO + 2HNO 3 \u003d Mg (NO 3) 2 + H 2 O
Iron, aluminum, chromium are passivated with cold concentrated nitric acid. Iron interacts with dilute nitric acid, and, depending on the acid concentration, not only various nitrogen reduction products are formed, but also various iron oxidation products:
Fe + 4HNO 3 (25% p - p) \u003d Fe (NO 3) 3 + NO + 2H 2 O
4Fe + 10HNO 3 (2% p - p) \u003d 4Fe (NO 3) 2 + NH 4 NO 3 + 3H 2 O
Task number 3
In the transformation scheme: the substance "X" is
- 1. CuO
- 2. Cu
- 3. Cu(OH) 2
- 4. CuCl2
Answer: 1
Explanation:
Copper (II) hydroxide Cu(OH) 2 is a blue water-insoluble compound. When heated to 70-90 o C, Cu (OH) 2 powder or its aqueous suspensions decompose to CuO and H 2 O.
CuO + H 2 \u003d Cu + H 2 O
Copper at temperatures of the order of 400-600 o C is oxidized to copper oxide (II):
2Cu + O 2 \u003d 2CuO
Task number 4
Sodium hydroxide solution does not interact with
- 1. CO 2
- 2. HCl
- 3.SO2
- 4. MgO
Answer: 4
Explanation:
Sodium hydroxide NaOH (alkali) has basic properties, therefore it interacts with acid oxides, acids and salts to form a precipitate or gas (due to ammonium cations in salts). Of the proposed answers, NaOH does not interact only with MgO, since the oxide is basic. Depending on the excess and deficiency of reagents, the following products are obtained:
NaOH + CO 2 = NaHCO 3 or 2NaOH + CO 2 = Na 2 CO 3 + H 2 O
NaOH + HCl \u003d NaCl + H 2 O
NaOH + SO 2 = NaHSO 3 or 2NaOH + SO 2 = Na 2 SO 3 + H 2 O
Task number 5
Sodium hydroxide does not react with
- 1.Al(OH)3
- 2. ZnO
- 3.H2SO4
- 4.Ba(OH)2
Answer: 4
Explanation:
Sodium hydroxide NaOH (alkali) has basic properties, since it belongs to the class of bases, i.e. complex substances consisting of a metal atom and hydroxide ions OH - . Bases that are readily soluble in water are called alkalis.
Alkalis interact with acids, acid oxides, amphoteric oxides and hydroxides, transition metals and salt solutions with the formation of a precipitate or the evolution of gas (ammonia). Therefore, from the proposed list, alkali NaOH interacts with amphoteric hydroxide Al (OH) 3, amphoteric oxide ZnO and acid H 2 SO 4:
NaOH + H 2 SO 4 = NaHSO 4 or 2NaOH + H 2 SO 4 = Na 2 SO 4 + 2H 2 O
(depending on excess or deficiency of reagents)
ZnO + 2NaOH \u003d Na 2 ZnO 2 + H 2 O (fusion)
ZnO + 2NaOH (solution) + H2O = Na 2
Ba (OH) 2 is also an alkali, the reaction with NaOH does not go.
Task number 6
Both aluminum hydroxide and hydrochloric acid can interact with
- 1. CuO
- 2.H2SO4
- 3.CO2
- 4.NaOH
Answer: 4
Explanation:
Aluminum hydroxide Al(OH) 3 is an amphoteric hydroxide, i.e. a substance that, depending on the conditions, exhibits either acidic or basic properties.
Of the proposed options, how the base Al (OH) 3 reacts with sulfuric acid H 2 SO 4:
2Al (OH) 3 + 3H 2 SO 4 \u003d Al 2 (SO 4) 3 + 6H 2 O, or depending on the ratios of the reagents:
Al (OH) 3 + 3H 2 SO 4 \u003d Al (HSO 4) 3 + 3H 2 O - the formation of an acid salt of aluminum hydrosulfate;
2Al (OH) 3 + 3H 2 SO 4 \u003d 2 (SO 4) 3 + 2H 2 O - the formation of the basic salt of aluminum dihydroxosulfate;
Al (OH) 3 + H 2 SO 4 \u003d SO 4 + H 2 O - the formation of the basic salt of aluminum hydroxosulfate.
In addition, how the acid Al (OH) 3 reacts with alkalis, so the reaction proceeds with NaOH:
NaOH + Al(OH) 3 = NaAlO 2 + 2H 2 O (fusion)
NaOH (solution) + Al(OH) 3 = Na
Aluminum hydroxide Al(OH) 3 does not interact with transition metal oxide CuO and weak carbonic acid oxide CO 2 .
Hydrochloric acid HCl reacts with metal oxides, bases, metals in the electrochemical series of metal voltages up to hydrogen and metal salts formed by weaker acids, or with the formation of a precipitate. Thus, HCl reacts with CuO and NaOH, but does not react with sulfuric acid and carbon dioxide - acidic oxide:
CuO + 2HCl = CuCl 2 + H 2 O (exchange reaction)
NaOH + HCl \u003d NaCl + H 2 O (neutralization reaction: acid + alkali \u003d salt + water).
Task number 7
Iron(III) hydroxide interacts with each of two substances:
- 1.KOH and H2SO4
- 2. Cu(OH) 2 and HCl
- 3. HNO 3 and Na 2 SO 4
- 4. HCl and BaCl 2
Answer: 1
Explanation:
Iron (III) hydroxide Fe (OH) 3 is an insoluble amphoteric hydroxide, therefore, as an amphoteric hydroxide, Fe (OH) 3 interacts with strong acids and alkalis. Interaction with sulfuric acid (depending on the ratio of base and acid):
2Fe (OH) 3 + 3H 2 SO 4 \u003d Fe 2 (SO 4) 3 + 6H 2 O - the formation of iron sulfate (III)
2Fe(OH) 3 + H 2 SO 4 = 2 SO 4 + 2H 2 O– formation of iron (III) dihydroxosulfate
Fe (OH) 3 + H 2 SO 4 \u003d Fe (OH) SO 4 + 2H 2 O - the formation of iron (III) hydroxosulfate
Fe (OH) 3 + 3H 2 SO 4 \u003d Fe (HSO 4) 3 + 3H 2 O - the formation of iron (III) hydrosulfate
Interaction with alkali:
Fe (OH) 3 + 3KOH \u003d K 3
Also Fe (OH) 3 reacts with HCl and HNO 3:
Fe (OH) 3 + 3HCl \u003d FeCl 3 + 3H 2 O - the formation of iron (III) chloride
Fe (OH) 3 + HCl \u003d Cl + H 2 O - the formation of iron (III) dihydroxochloride
Fe (OH) 3 + 2HCl \u003d Cl 2 + 2H 2 O - the formation of iron (III) hydroxochloride
Fe (OH) 3 + 3HNO 3 \u003d Fe (NO 3) 3 + 3H 2 O– formation of iron (III) nitrate
Fe (OH) 3 + HNO 3 \u003d NO 3 + H 2 O - the formation of iron (III) dihydroxonitrate
Fe (OH) 3 + 2HNO 3 \u003d (NO 3) 2 + 2H 2 O - the formation of iron (III) hydroxonitrate
The water-insoluble Fe(OH) 3 base does not interact with salts, since precipitation cannot already form, and with insoluble bases such as Cu(OH) 2 .
Task number 8
Concentrated nitric acid reacts with each of two substances:
- 1. Au and NaOH
- 2. Cu and NaOH
- 3. H 2 SO 4 and AgNO 3
- 4. Fe and SiO 2
Answer: 2
Explanation:
Gold is an inert metal, standing in the series of metal activities to the right of all other metals. Under normal conditions, it does not interact with most acids and does not form oxides. Concentrated nitric acid is not able to dissolve it.
Concentrated HNO 3 interacts with bases (in particular, with alkalis) to form salts and a low-dissociating substance - water (neutralization reaction):
HNO 3 (conc.) + NaOH = NaNO 3 + H 2 O
Oxidizing acids interact with copper, although it is located to the right of hydrogen in the series of metal activities. A redox reaction occurs due to the oxidizing ability N +5 with the release of brown gas NO 2 and the oxidation of copper to +2:
Cu + 4HNO 3 (conc.) = Cu(NO 3) 2 + 2NO 2 + 2H 2 O
Nitric acid HNO 3, which has acidic properties, does not interact with sulfuric acid (H 2 SO 4) and does not react with silver nitrate (AgNO 3; due to the presence of identical anions, exchange is impossible constituent parts).
Nitric acid HNO 3, which has acidic properties, does not interact with acid oxides (SiO 2).
Cold concentrated nitric acid passivates iron (i.e., the metal surface goes into an inactive state associated with the formation of thin surface layers of compounds that prevent metal oxidation).
Task number 9
Dilute hydrochloric acid reacts with
- 1. NaNO3
- 2. Al(NO 3) 3
- 3. Ca(NO 3) 2
- 4. AgNO3
Answer: 4
Explanation:
Hydrochloric acid reacts with metals in the range of activities up to hydrogen, basic and amphoteric oxides, bases and salts to form an insoluble substance.
Of the proposed options, HCl interacts only with silver nitrate to form a "white cheesy" AgCl precipitate:
HCl + AgNO 3 \u003d AgCl ↓ + HNO 3
Hydrochloric acid does not react with NaNO 3 , Al(NO 3) 3 and Ca(NO 3) 3 salts, since the Na + , Al 3+ , Ca 2+ cations do not form precipitates with the Cl − anion.
