Chapter 8, Problem 8.59E

Interpretation Introduction

Interpretation:

The mean ionic molality and activity for a $0.050\text{-molal}$ solution of ${\text{CuSO}}_{\text{4}}$ are to be stated.

Concept introduction:

The ionic activity is described as the effective concentration of ions in the solution. The activity of coefficients tells about the deviation of chemical substances from ideal behavior. The relation between two is given by the expression given below.

$a\pm ={\left({\gamma }_{\pm }\frac{m_{\pm }}{m_o}\right)}^{n_{\pm }}$

In the above equation, $a\pm$ is the mean ionic activity, ${\gamma }_{\pm }$ is the mean activity of coefficients, $n_{\pm }$ is the charge on the ions and $m_{\pm }$ is the molality of ions in the solution.