Q. $A,\ B\ and\ C$ are ideal gases. Their molecular weights are 2, 4 and 28 respectively. The rate of diffusion of these gases follow the order
A) $C > A > B$
B) $C > B > A$
C) $A = B$
D) $A > L$
Explanation
(d)
According to Graham’s law of diffusion
$r \propto \frac{1}{\sqrt{M}}$
Hence, the order of rate of diffusion is
Gases : $\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ A > B > C$
Mol. Weight : $\ \ \ 2\ \ \ \ \ 4\ \ \ \ \ \ 28$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.