First slide

Kinetic theory of ideal gases

Question

A gas is allowed to expand isothermally. The root mean square velocity of the molecules

Easy

A

Will increase
B

Will decrease
C

Will remain unchanged
D

Depends on other factors

Solution

$v_{R M S} = \sqrt{\frac{3 R T}{M}}$ . If T is same, $v_{R M S}$ remains same.

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