At a certain temperature, the rms velocity for `O_(2)` is `400 ms^(-1)`. At the same temperature, the rms velocity for `H_(2)` molecules will be

Options

A. `100 ms^(-1)`
B. `25 ms^(-1)`
C. `1600 ms^(-1)`
D. `6400 ms^(-1)`

Answer

C

Explanation

`(C_(H_2))/(C_(O_2)) = sqrt((32)/(2)) = 4`.
or, `C_(H_2) = 4 xx C_(O_2)=4xx400ms^(-1) = 1600ms^(-1)`.