Chapter 8, Problem 8.2P

Interpretation Introduction

Interpretation:

In the ionic range of $\text{0}\text{-}\text{0}\text{.1}\text{M}$ the value of activity coefficients decrease with

1. (a) Increasing ionic strength
2. (b) Increasing ionic strength
3. (c) Decreasing hydrated radius

From the above statements, true statements has to be identified.

Concept introduction:

Extended Debye-Huckel equation:

The relationship between activity coefficient and the ionic strength is given by extended Debye-Huckel equation.

$\begin{array}{l}\text{log}\text{γ}\text{=}\frac{\text{-}\text{0}\text{.51}{\text{z}}^{\text{2}}\sqrt{\text{μ}}}{\text{1}\text{+}\left(\text{α}\sqrt{\text{μ}}\text{/305}\right)}\\ \text{where,}\\ \text{γ}\text{-}\text{activity}\text{coefficient}\text{of}\text{ion}\\ \text{μ}\text{-}\text{ionic}\text{strength}\text{of}\text{solution}\\ \text{α}\text{-}\text{size}\text{of}\text{ion}\end{array}$