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The molecular weights of H(2) and O(2) a...

The molecular weights of `H_(2) and O_(2)` are 2 and 32 respectively. The rms velocity of `H_(2)` molecule at N.T.P. is `2000m//s`. What is the rms velocity of Oxygen molecules at N.T.P. ?

A

`400m//s`

B

`500m//s`

C

`1000m//s`

D

`3000m//s`

Text Solution

Verified by Experts

The correct Answer is:
B

At the same temperature (N.T.P.)
`Cpropsqrt(1/M)" "thereforeC_(O)/C_(H)=sqrt(M_(H)/M_(O))=sqrt(2/32)=1/4`
`thereforeC_(O)=C_(H)/4=500m//s`
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