Chapter 16, Problem 16.2P

Interpretation Introduction

Interpretation:

The $\text{pH}$ of a buffer that is $0.250\text{M}$ in $\text{HCN}$ and $0.170\text{M}$ in $\text{KCN}$ is to be calculated by using both equilibrium approach and Henderson-Hasselbalch approach.

Concept introduction:

The buffer solution is an aqueous solution contains the mixture of a weak acid and its conjugate base or the mixture of weak base with its conjugate acid. The buffer solution resists the $\text{pH}$ change by neutralizing added amount of acid or base.

The acid in a buffer solution neutralizes the added base and the base present in buffer solution neutralizes the added acid.

To determine:

The $\text{pH}$ of a buffer that is $0.250\text{M}$ in $\text{HCN}$ and $0.170\text{M}$ in $\text{KCN}$ by using both equilibrium approach and Henderson-Hasselbalch approach.