Question

1.Тест на соответствие: Определите типы реакций 1) CaO + CO, = Cach, 2) H,SO, + 2NaOH = Na,So,+2 H,0 3) Fe + S = Fes 4) 2H,0 = 2H5 + 0,1 5) CuO + H = Cu + H,0 6) Zn + 2HCl = ZnCl2 + HT 7) ZnO + H,SO,= ZnSO4 + H,0 8) Cu(OH)2 = CuO + H,0 А) соединения Б) обмена В) разложения Г) замещения

Answer 1

1-А 2-Б 3-А 4-В 5-Г 6-Г 7-Б 9-В

Answer 2

Ответ:

1) CaO + CO₂ = CaСО₃ Соединения

2) H₂SO₄ + 2NaOH = Na₂SО₄+2H₂0 обмена

3) Fe + S = FeS соединения

4) 2Н₂О = 2Н₂ + О₂ разложения

5)CuO + H₂ = Cu + H₂0 замещения

6) Zn + 2HCl = ZnCl2 + H₂ замещения

7) ZnO + H₂SO₄= ZnSO₄ + H₂0 обмена

8) Cu(OH)₂ = CuO + H₂0 разложение

Объяснение:

Answer 3

Types of Reactions:

1) CaO + CO = Cach 2) H2SO4 + 2NaOH = Na2SO4 + 2H2O 3) Fe + S = FeS 4) 2H2O = 2H2 + O2 5) CuO + H2 = Cu + H2O 6) Zn + 2HCl = ZnCl2 + H2 7) ZnO + H2SO4 = ZnSO4 + H2O 8) Cu(OH)2 = CuO + H2O

The given chemical equations represent different types of reactions. Let's analyze each one:

1) CaO + CO = Cach: This is an example of a combination reaction, where two or more substances combine to form a single product.

2) H2SO4 + 2NaOH = Na2SO4 + 2H2O: This is an example of a double displacement reaction, also known as a metathesis reaction or exchange reaction. In this type of reaction, the positive and negative ions of two compounds switch places to form new compounds.

3) Fe + S = FeS: This is an example of a synthesis reaction, where two or more substances combine to form a more complex product.

4) 2H2O = 2H2 + O2: This is an example of a decomposition reaction, where a single compound breaks down into two or more simpler substances.

5) CuO + H2 = Cu + H2O: This is an example of a redox reaction, specifically a reduction reaction. In this type of reaction, there is a transfer of electrons between reactants.

6) Zn + 2HCl = ZnCl2 + H2: This is an example of a single displacement reaction, also known as a substitution reaction. In this type of reaction, an element replaces another element in a compound.

7) ZnO + H2SO4 = ZnSO4 + H2O: This is another example of a double displacement reaction.

8) Cu(OH)2 = CuO + H2O: This is an example of a decomposition reaction.

Therefore, the types of reactions represented by the given chemical equations are: A) Combination reactions B) Double displacement reactions C) Synthesis reactions D) Decomposition reactions E) Redox reactions F) Single displacement reactions

Note: The given options in the question (А, Б, В, Г) do not correspond to the types of reactions.