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Question

The temperature of 5mol of a gas which was held at constant volume was changed from 100C to 120C. The change in internal energy was found to be 80J. The total heat capacity of the gas at constant volume will be equal to

A
8J/K
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B
0.8J/K
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C
4J/K
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D
0.4J/K
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Solution

The correct option is B 4J/K
ΔU=CVΔP
CV=ΔUΔT=80J20K=4J/K

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