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Which of the following gases will have h...

Which of the following gases will have hightest average molecular speed at `25^(@)C` ?

A

`Ar`

B

`CH_(4)`

C

`N_(2)`

D

`CH_(2)F_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`U_(avg) = sqrt((8RT)/(pi M))`
`U_(avg) prop (1)/(sqrtM)`
`M darr U_(avg) uarr`
(1) `Ar rarr 40`
(2) `CH_(4) rarr 16`
(3) `N_(2) rarr 28`
(4) `CH_(2)F_(2) rarr 52`
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