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The root mean square speed of hydrogen m...

The root mean square speed of hydrogen molecule at 300 K is 1930m/s. Then the root mean square speed of oxygen molecules at 900K will be………..

A

`1930sqrt3m//s`

B

`836m//s`

C

`643m//s`

D

`(1930)/sqrt3m//s`

Text Solution

Verified by Experts

The correct Answer is:
B
`v_(rms) prop sqrt(T/M) implies ((v_(rms))_(O_2))/((v_(rms)_(H_2)))=sqrt((T_(O_2))/(T_(H_2)) xx (M_(H_2))/(M_(O_2)))`
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