ThermodynamicsHard

Question

70 cal of heat are required to raise the temperature of 2 moles of an ideal diatomic gas at constant pressure 30oC to 35oC. The amount of heat required (in calorie) to raise the temperature of the same gas through the same gas (30oC to 35oC) at constant volume is

Options

A.30
B.50
C.70
D.90

Solution

Q1 = nCp ᐃT, Q2 = nCv ᐃT,
or     Q2 = = 50 cal
∴ Correct option is (b)

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