Question

The rate of diffusion of a gas of molecular weight 72 is 10ml per sec. The rate of diffusion of hydrogen at same temperature and pressure is

• A. 10 ml
• B. 30 ml per sec.
• C. 60 $\sqrt{2}$ ml per sec
• D. 60 ml per sec.

Answer 1

The correct option is D 60 ml per sec.

$\frac{r_{H_2}}{r_{gas}}=\sqrt{\frac{M_{gas}}{2}}$
$\frac{r_{H_2}}{10}=\sqrt{\frac{72}{2}}$
$r_{H_2}=60ml/sec$