Chapter 3, Problem 3.18P

Interpretation Introduction

(a)

Interpretation:

The equilibrium constant for the reaction is to be calculated.

Concept introduction:

Dissociation constant, $K_{\text{a}}$, is used to measure the strength of a Brønsted acid. There is an inverse relationship between the acidity of a Brønsted acid and its $\text{p}{K}_{\text{a}}$ value. The relation between $K_{\text{eq}}$ with $\text{p}{K}_{\text{a}}$ is given by an expression shown below.

$K_{\text{eq}}={10}^{\text{p}{K}_{\text{BH}}/\text{p}{K}_{\text{AH}}}$

Where,

• $K_{\text{AH}}$ is dissociation constant for an acid, $\text{AH}$.

• $K_{\text{BH}}$ is dissociation constant for conjugate acid, $\text{BH}$.

Interpretation Introduction

(b)

Interpretation:

The equilibrium constant for the reaction is to be predicted.

Concept introduction:

Dissociation constant $K_{\text{a}}$ is used to measure the strength of a Brønsted acid. There is an inverse relationship between the acidity of a Brønsted acid and its $\text{p}{K}_{\text{a}}$ value. The relation between $K_{\text{eq}}$ with $\text{p}{K}_{\text{a}}$ is given by an expression shown below.

$K_{\text{eq}}={10}^{\text{p}{K}_{\text{BH}}/\text{p}{K}_{\text{AH}}}$

Where,

• $K_{\text{AH}}$ is dissociation constant for an acid, $\text{AH}$.

• $K_{\text{BH}}$ is dissociation constant for conjugate acid, $\text{BH}$.