Chapter 7, Problem 7.54AP

(a)

Interpretation Introduction

Interpretation:

The equilibrium constant for the following reaction has to be determined.

Concept Introduction:

Equilibrium constant is explains the relationship among reactant and product at equilibrium for a particular reaction.

The equilibrium constant expression is expressed by the formula,

$\text{K=}\frac{\text{Concentration}\text{of}\text{products}}{\text{Concentration}\text{of}\text{reactants}}$

It is the ratio of concentration of product raised to power of their corresponding coefficient of stoichiometry and concentration of reactant raised to power of their corresponding coefficient of stoichiometry at equilibrium.

(b)

Interpretation Introduction

Interpretation:

K for the given reaction at ${25}^{0}C$ has to be determined. The given reaction was whether reactants or products favored has to be determined.

Concept Introduction:

Equilibrium constant:

It is the ratio of products to reactants has a constant value when the reaction is in equilibrium at a certain temperature. And it is represented by the letter K.

For a reaction,

$\text{aA}\text{+}\text{bB}\rightleftarrows \text{cC}\text{+}\text{dD}$

The equilibrium constant is, $K=\frac{{\text{[C]}}^{\text{c}}{\text{[D]}}^{\text{d}}}{{\text{[A]}}^{\text{a}}{\text{[B]}}^{\text{b}}}$

where,

a, b, c and d are the stoichiometric coefficients of reactant and product in the reactions.

If $K<1$, then it is reactant favoured reaction whereas if $K>1$, then it is product favoured reaction.