Question

$Xml$ of $H_2$ gas effuses through a hole in a container in $5sec$. The time taken for the effusion of the same volume of the gas specified below under identical condition is:

• A. $10sec.He$
• B. $20sec.O_2$
• C. $25sec.C{O}_2$
• D. $55sec.C{O}_2$

Answer 1

The correct option is B $20sec.O_2$

Let us consider the problem:

For $H_2$& $O_2$

Implies that

$\frac{X}{5}\times \frac{t}{X}=\sqrt{\frac{32}{2}}$

Hence the answer is $t=20\sec .$