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Question

The ratio of average kinetic energy of H2 and CH4 at 27 C will be:

A
1 : 1
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B
1 : 8
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C
8 : 1
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D
4 : 1
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Solution

The correct option is A 1 : 1
We know,
Avg. KE=32kT
Where k = boltzmann constant.
Temperature is the same in both cases here.
Since the average kinetic energy depends only on temperature so both H2 and CH4 will have the same average kinetic energy and the required ratio will be 1:1.

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