Question

The ratio between rms velocity of $H_{2}and{O}_2$ at 800 K is

• A. 1:2
• B. 2:1
• C. 4:1
• D. 1:3

Answer 1

The correct option is C

4:1

At constant T; $V_{rms}\propto \frac{1}{\sqrt{M}}$

$\frac{V_{H_2}}{V_{O_2}}=\sqrt{\frac{32}{2}}=4:1$