Chapter 22, Problem 22.73P

(a)

Interpretation Introduction

Interpretation:

The time required to effuse $\text{0}{\text{.10 mol of D}}_{\text{2}}$ at given temperature and pressure has to be given.

Concept Introduction:

Graham’s law: It states that rate of effusion of gaseous substance is inversely proportional to the square root of its molar mass.

    $\frac{\text{rate of effusion A}}{\text{rate of effusion B}}\text{=}\sqrt{\frac{{\text{M}}_{\text{B}}}{{\text{M}}_{\text{A}}}}$

(b)

Interpretation Introduction

Interpretation:

The number of effusion step take to separate an equimolar mixture of ${\text{D}}_{\text{2}}\text{and}{\text{H}}_{\text{2}}$ has to be given.