1.

The root mean square speed of the molecules of diatomic gas is u. When the temperature is doubled , the molecules dissociate into two atoms. The new rms speed of the atome is

Answer»

`sqrt(2u)`
U
2u
4u

Solution :`u = sqrt((3RT)/(M))`
If T = 2T and M = M/2 , then `u_(1) = sqrt((3 R XX 2T)/(M//2))`
`therefore (u_(1))/(u)= sqrt4 = 2`.


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