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

Question

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

Tardigrade Admin · Accepted Answer

( C H 2/ C O 2)=√(32/2)=4 or C H 2=4 × C O 2 =4 × 400 ms -1=1600 ms -1

Q. At a certain temperature, the rms velocity for $O_{2}$ is $400 m s^{- 1}$ . At the same temperature, the rms velocity for $H_{2}$ molecules will be

$100 m s^{- 1}$

$25 m s^{- 1}$

$1600 m s^{- 1}$

$6400 m s^{- 1}$

$\frac{C _{H_{2}}}{C _{O_{2}}} = \frac{32}{2} = 4$
or $C_{H_{2}} = 4 \times C_{O_{2}}$
$= 4 \times 400 m s^{- 1} = 1600 m s^{- 1}$

Q. At a certain temperature, the rms velocity for O2​ is 400ms−1. At the same temperature, the rms velocity for H2​ molecules will be

100ms−1

25ms−1

1600ms−1

6400ms−1