Question

The ratio between the $RMS$ velocity of $H_2$ at 50$K$ and $RMS$ velocity of $O_2$ at 800$K$ will be:

• A. 4:1
• B. 2:3
• C. 1:1
• D. 1:4

Answer 1

The correct option is C 1:1

$\frac{C_1}{C_2}=\sqrt{\frac{T_1{M}_2}{T_2{M}_1}}$

$\frac{C_{H_2}}{C_{O_2}}=\sqrt{\frac{50\times 32}{800\times 2}}$

$\frac{C_{H_2}}{C_{O_2}}=1:1$
Option C is correct.