Chapter 9, Problem 9.1EP

What is the general chemical equation for each of the following types of chemical reactions?

1. a. Displacement reaction
2. b. Combination reaction

Interpretation Introduction

Interpretation:

General chemical equation for the displacement reaction has to be written.

Concept Introduction:

Displacement Reaction:

It is a type of chemical reaction in which the more reactive element displaces the less reactive.

There must be two reactants and products in a displacement reaction.

There are two types of displacement reaction:

Single Displacement Reaction:

In this reaction, one reactant is replaced by the other reactant.

Example:

  ${\text{Fe+CuSO}}_{\text{4}}\underset{}{\to }{\text{FeSO}}_{\text{4}}\text{+Cu}$

Double Displacement Reactions:

In this type of reactions both cations and anions in the reactants exchange their partners and form products.

Example:

  ${\text{AgNO}}_{\text{3}}\text{+NaCl}\underset{}{\to }{\text{AgCl+NaNO}}_{\text{3}}$

Explanation of Solution

The general chemical reaction for the displacement reaction is:

  $\text{X+YZ}\underset{}{\to }\text{Y+XZ}$

One reactant is replaced by the other the reactant.  That is the reactant $\text{X}$ replaces $\text{Y}$ and forms the product $\text{XZ}$.

Interpretation Introduction

Interpretation:

General chemical reaction for the combination reaction has to be written.

Concept Introduction:

Combination Reactions:

It is a type of chemical reaction in which two or more reactants combine to form a single product

It is also known as synthesis reactions.

Example:

  ${\text{2Na(s)+Cl}}_{\text{2}}\text{(g)}\stackrel{}{\to }\text{2NaCl(s)}$

Explanation of Solution

The general chemical reaction for combination reactions is:

  $\text{X+Y}\underset{}{\to }\text{XY}$

Here, $\text{XandY}$ are the reactants that combine to give $\text{XY}$.