Chapter 16, Problem 16B.6BE

Interpretation Introduction

Interpretation:

The diffusion coefficient of ${\text{CH}}_{\text{3}}{\text{CO}}_2^{-}$ ion in water at $2\text{5}{}^{\text{ο}}\text{C}$ is to be calculated.

Concept introduction:

In Fick’s law, the constant of proportionality between the molar flux and the concentration gradient is termed as the diffusion coefficient.  It is also called diffusivity and its S.I unit is ${\text{m}}^{\text{2}}/\text{s}$.