Question

100 mL of $O_2$ gas diffuses in 10 sec. 100 mL of gas $X$ diffuses in $t$ sec. Gas $X$ and time $t$ can be:

• A. $H_2,2.5sec$
• B. $S{O}_2,16sec$
• C. $CO,10sec$
• D. $He,4sec$

Answer 1

The correct option is A $H_2,2.5sec$

As Graham diffusion law-

$\frac{t2}{t1}=\sqrt{\frac{M2}{M1}}$

$\frac{t2}{10}=\sqrt{\frac{M2}{32}}$

since two uknowns are present so we can substitute the values from the given options,option (a) is satisfied the answer.