Chapter 8, Problem 8.13P

Interpretation Introduction

Interpretation:

The $\text{pH}$ of the given solution containing $\text{0}\text{.010}\text{M}\text{NaOH}\text{plus}\text{0}\text{.0120}\text{M}{\text{LiNO}}_{\text{3}}$ has to be calculated.

Concept introduction:

pH of a solution:

The $\text{pH}$ of a solution can be calculated as,

$\begin{array}{l}\text{pH}\text{=}\text{-}\text{log}{\text{A}}_{{\text{H}}^{\text{+}}}\\ \text{=}\text{-}\text{log}\left[{\text{H}}^{\text{+}}\right]{\text{γ}}_{{\text{H}}^{\text{+}}}\\ \text{where,}\\ {\text{A}}_{{\text{H}}^{\text{+}}}\text{-}\text{activity}\text{of}\text{hydrogen}\text{ion}\\ {\text{γ}}_{{\text{H}}^{\text{+}}}\text{-}\text{activity}\text{coefficient}\text{of}\text{hydrogen}\text{ion}\end{array}$

With the help of above equation, the negative logarithm of activity of ${\text{H}}^{\text{+}}$ ion can be calculated.