Question

The rate of effusion of helium gas at a pressure of 1000 torr is 10 torr $\min ^{-1}$. What will be the rate of effusion of hydrogen gas at a pressure of 2000 torr at the same temperature :

(A) 20 torr $min ^{-1}$

(B) 40 torr $min ^{-1}$

(C) $20 \sqrt{2}$ torr $\min ^{-1}$

(D) 10 torr $min ^{-1}$

Answer 1

The rate of effusion of hydrogen gas at a pressure of 2000 torr at the same temperature will be $20 \sqrt{2}$ torr $\min ^{-1}$.

So, The correct option of this question is (C).