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Which of the following gases has the hig...

Which of the following gases has the highest value of r.m.s. velocity at 298 K ?

A

`CH_(4)`

B

CO

C

`Cl_(2)`

D

`CO_(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
r.m.s. velocity, `mu = sqrt(( 3RT)/( M))`
or `mu alpha sqrt((1)/( M))` at the same temperature.
`CH_(4)` has lowest molecular mass and hence highest r.m.s velocity .
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