Chapter 4, Problem 4.126P

(a)

Interpretation Introduction

Interpretation:

The percent yield of the formation of ${\text{NH}}_3$ is to be calculated.

Concept introduction:

Haber process is one of the industrial methods employed for the preparation of ammonia $\left({\text{NH}}_3\right)$. In this method, nitrogen and hydrogen molecule react in the presence of an iron catalyst to form ammonia gas. High temperature and pressure condition is required for the reaction. The balanced chemical equation for the preparation of ${\text{NH}}_3$ is:

${\text{N}}_2\left(g\right)+3{\text{H}}_2\left(g\right)\to 2{\text{NH}}_3\left(g\right)$

Combination redox reactions are the reactions in which two or more reactants combine to form a single product. The formation of ammonia from nitrogen and hydrogen molecule is an example of a combination redox reaction.

(b)

Interpretation Introduction

Interpretation:

The moles of ${\text{N}}_2$ and ${\text{H}}_2$ that are present at equilibrium is to be calculated.

Concept introduction:

The redox reaction can be classified into three types depending upon the number of reactants and products as follows:

1. Combination redox reaction

2. Decomposition redox reaction

3. Displacement redox reactions

Combination redox reactions are the reactions in which two or more reactants combine to form a single product. In displacement redox reactions, substances on both sides of the equation remain the same but the atoms exchange places in order to form the product while in decomposition reaction, one compound decomposes to form one or more product.