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Question:

The molar specific heats of an ideal gas at constant pressure and volume are denoted by Cp and Cv respectively. If γ = Cp/Cv and R is the universal gas constant, then Cv is equal to:

1+γ/(1-γ)

R(γ-1)

γR

(γ-1)R

Solution:

We know that, Cp - Cv = R
Also, γ = Cp/Cv
From the given correlations, we get
Cv = R(γ - 1)