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Question

Assuming R=8.3 J mol1K1 and γ=1.4 the values of Cp and Cv of a gas are:

A
29.05 Jmol1K1, 20.75 Jmol1K1
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B
20.75 Jmol1K1, 29.05 Jmol1K1
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C
16.60 J mol1K1, 8.300 Jmol1K1
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D
8.300 J mol1K1, 16.60 Jmol1K1
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Solution

The correct option is D 29.05 Jmol1K1, 20.75 Jmol1K1
γ=CpCv=1.4Cp=1.4Cv

R=CpCv=8.3

1.4CvCv=8.30.4Cv=8.3

Cv=8.30.4=834=20.75 Jmol1K1

Cp=Cv+R
=20.75+8.3=29.05 Jmol1K1

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