Q. What is the ratio of diffusion rate of oxygen and hydrogen?
A) 1 : 4
B) 4 : 1
C) 1 : 8
D) 8 : 1
Explanation
(a)
According to Graham’s law
$\frac{r_{O_{2}}}{r_{H_{2}}} = \sqrt{\frac{M_{H_{2}}}{M_{O_{2}}}}$
$\ \ \ \ \ \ \ = \sqrt{\frac{2}{32}}$
$\ \ \ \ \ \ \ = \frac{1}{4}$
$\therefore r_{O_{2}}:r_{H_{2}} = 1\ :4$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.