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###### Pradeep Jogsan posted an Question
October 25, 2021 • 16:45 pm 30 points
• IIT JAM
• Physics (PH)

## 11. 70 calories of heat are required to taise the temperature of 2 moles of an ideal gas at constant pressure from 30 c to 35°c. the amount of heat required in

11. 70 calories of heat are required to taise the temperature of 2 moles of an ideal gas at constant pressure from 30 C to 35°C. The amount of heat required in calories to raise the temperature of same gas through the same range (30°C to 35°C) at constant volume is (a) 30 (c) 70 (b) 50 (d) 90

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• ##### Anshum Sharma Best Answer

understood ??

• ##### Anshum Sharma

There is another method in which you know that Cp - Cv = R ...... Cv = Cp - R we calculate Cp above which is 7 cal/mol/k and we know that the value of R for an ideal gas is equal to 2cal/mol/k you can check on internet also.. So Cv = 7 - 2 = 5 cal/mol/k then onwards you can see the attached image

• ##### Anshum Sharma

Here is the detailed solution option (b) is correct

why you assume diatomic gas???

I have mistakenly write the diatomic gas... instead of ideal gas

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