Chapter 7, Problem 14CR

Interpretation Introduction

Interpretation:

Give an example of a synthesis reaction and of a decomposition reaction, are synthesis and decomposition reactions always also oxidation-reduction reactions? Explain.

Concept Introduction:

In a synthesis reaction two or more reactants combine to form a more complex product. Synthesis means to combine.

General reaction for a synthesis reaction:

$\text{A}+\text{B}\to \text{A}\text{B}$

In a decomposition reaction a complex reactant breaks down into two or more simpler products. It is just the opposite of a synthesis reaction.

General reaction for a decomposition reaction:

$\text{A}\text{B}\to \text{A}+\text{B}$

In an oxidation reaction, electrons are lost by the substance. Also when the oxidation number of a substance becomes more positive it is said to have undergone an oxidation reaction.

In a reduction reaction, electrons are gained by the substance. Also when the oxidation number of a substance becomes more negative it is said to have undergone a reduction reaction.