Thermodynamics Question 187

Question: A Container having 1 mole of a gas at a temperature 27°C has a movable piston which maintains at constant pressure in container of 1 atm. The gas is compressed until temperature becomes 127°C. The work done is (Cp for gas is 7.03 cal/mol?K)

[DCE 2005]

Options:

A) 703 J

B) 814 J

C) 121 J

D) 2035 J

Show Answer

Answer:

Correct Answer: B

Solution:

At constant pressure $ W=P\Delta V=\mu R\Delta T $

$ =1\times 8.31\times 100 $

$ =831\approx 814J $



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