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A vessel contains a mixture of one mole ...

A vessel contains a mixture of one mole of Oxygen and two moles of Nitrogen at `300` K. The ratio of the average kinetic energy per `O_(2)` molecule to that per `N_(2)` molecule is :

A

`1:1`

B

`1:2`

C

`2:1`

D

`8:7`

Text Solution

Verified by Experts

The correct Answer is:
A
Both `O_(2)` and `N_(2)` are diatomic gases. Rotational degree of freedom in both cases is two. Therefore, average rotational kintic energy per molecule for each of then is `3(1/2kT)` or the ratio is 1:1.
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DC PANDEY ENGLISH-THERMOMETRY THERMAL EXPANSION AND KINETIC THEORY OF GASES-Check point 14.4
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