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Questions  

Supposing the distance between the atoms of a diatomic gas to be constant, its  specific heat at constant volume per mole (gram mole) is

a
3R2
b
5R2
c
R
d
R2

detailed solution

Correct option is B

Rigid diatomic molecule only has translational (3) and rotational (2) degrees of  freedom.CV=fR2=5R2 .

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