Chapter 13, Problem 3E

(a)

To determine

The combination or decomposition reaction in the chemical equation: ${\text{CuCl}}_{\text{2}}+{\text{H}}_{\text{2}}\to \text{Cu}+\text{HCl}$

Answer to Problem 3E

The given chemical equation is neither combination nor decomposition reaction.

Explanation of Solution

Given Info: Refer to the exercise 13.1-1(a) in the textbook.

Explanation:

A reaction in which two or more reactants are present and the reactants are combined to form only one product is called combination reaction.

A reaction in which only one reactant is present and the reactant is decomposed into two or more than two products is called decomposition reaction.

The given chemical equation is written as,

${\text{CuCl}}_{\text{2}}+{\text{H}}_{\text{2}}\to \text{Cu}+\text{HCl}$

In the above equation, there are two reactants and two products. Therefore, the given chemical equation is neither combination nor decomposition reaction.

Conclusion:

Therefore, the given chemical equation is neither combination nor decomposition reaction.

(b)

To determine

The combination or decomposition reaction in the chemical equation: $\text{Fe}+{\text{O}}_{\text{2}}\to {\text{Fe}}_{\text{2}}{\text{O}}_{\text{3}}$

Answer to Problem 3E

The given chemical equation is a combination reaction.

Explanation of Solution

Given Info: Refer to the excercise 13.1-1(b) in the textbook.

Explanation:

A reaction in which two or more reactants are present and the reactants are combined to form only one product is called combination reaction.

A reaction in which only one reactant is present and the reactant is decomposed into two or more than two products is called decomposition reaction.

The given chemical equation is written as,

$\text{Fe}+{\text{O}}_{\text{2}}\to {\text{Fe}}_{\text{2}}{\text{O}}_{\text{3}}$

In the above equation, there are two reactants and one product. Therefore, the given chemical equation is a combination reaction.

Conclusion:

Therefore, The given chemical equation is a combination reaction.

(c)

To determine

The combination or decomposition reaction in the chemical equation: $\text{Al}+{\text{H}}_{\text{2}}{\text{SO}}_{\text{4}}\to {\text{Al}}_{\text{2}}{\left({\text{SO}}_{\text{4}}\right)}_3+{\text{H}}_{\text{2}}$

Answer to Problem 3E

The given chemical equation is neither combination nor decomposition reaction.

Explanation of Solution

Given Info: Refer to the excercise 13.1-1(c) in the textbook.

Explanation:

A reaction in which two or more reactants are present and the reactants are combined to form only one product is called combination reaction.

A reaction in which only one reactant is present and the reactant is decomposed into two or more than two products is called decomposition reaction.

The given chemical equation is written as,

$\text{Al}+{\text{H}}_{\text{2}}{\text{SO}}_{\text{4}}\to {\text{Al}}_{\text{2}}{\left({\text{SO}}_{\text{4}}\right)}_3+{\text{H}}_{\text{2}}$

In the above equation, there are two reactants and two products. Therefore, the given chemical equation is neither combination nor decomposition reaction.

Conclusion:

Therefore, the given chemical equation is neither combination nor decomposition reaction.

(d)

To determine

The combination or decomposition reaction in the chemical equation: ${\text{CaC}}_2+{\text{H}}_{\text{2}}\text{O}\to \text{Ca}{\left(\text{OH}\right)}_2+{\text{C}}_{\text{2}}{\text{H}}_{\text{2}}$

Answer to Problem 3E

The given chemical equation is neither combination nor decomposition reaction.

Explanation of Solution

Given Info: Refer to the excercise 13.1-1(d) in the textbook.

Explanation:

A reaction in which two or more reactants are present and the reactants are combined to form only one product is called combination reaction.

A reaction in which only one reactant is present and the reactant is decomposed into two or more than two products is called decomposition reaction.

The given chemical equation is written as,

${\text{CaC}}_2+{\text{H}}_{\text{2}}\text{O}\to \text{Ca}{\left(\text{OH}\right)}_2+{\text{C}}_{\text{2}}{\text{H}}_{\text{2}}$

In the above equation, there are two reactants and two products. Therefore, the given chemical equation is neither combination nor decomposition reaction.

Conclusion:

Therefore, the given chemical equation is neither combination nor decomposition reaction.

(e)

To determine

The combination or decomposition reaction in the chemical equation: ${\text{KNO}}_3\to {\text{KNO}}_2+{\text{O}}_{\text{2}}$

Answer to Problem 3E

The given chemical equation is a decomposition reaction.

Explanation of Solution

Given Info: Refer to the excercise 13.1-1(e) in the textbook.

Explanation:

A reaction in which two or more reactants are present and the reactants are combined to form only one product is called combination reaction.

A reaction in which only one reactant is present and the reactant is decomposed into two or more than two products is called decomposition reaction.

The given chemical equation is written as,

${\text{KNO}}_3\to {\text{KNO}}_2+{\text{O}}_{\text{2}}$

In the above equation, there is one reactant and two products. Therefore, the given chemical equation is a decomposition reaction.

Conclusion:

Therefore, the given chemical equation is a decomposition reaction.

(f)

To determine

The combination or decomposition reaction in the chemical equation: ${\text{C}}_{\text{6}}{\text{H}}_6+{\text{O}}_{\text{2}}\to {\text{CO}}_{\text{2}}+{\text{H}}_{\text{2}}\text{O}$

Answer to Problem 3E

The given chemical equation is neither combination nor decomposition reaction.

Explanation of Solution

Given Info: Refer to the excercise 13.1-1(f) in the textbook.

Explanation:

A reaction in which two or more reactants are present and the reactants are combined to form only one product is called combination reaction.

A reaction in which only one reactant is present and the reactant is decomposed into two or more than two products is called decomposition reaction.

The given chemical equation is written as,

${\text{C}}_{\text{6}}{\text{H}}_6+{\text{O}}_{\text{2}}\to {\text{CO}}_{\text{2}}+{\text{H}}_{\text{2}}\text{O}$

In the above equation, there are two reactants and two products. Therefore, the given chemical equation is neither combination nor decomposition reaction.

Conclusion:

Therefore, the given chemical equation is neither combination nor decomposition reaction.