Thermodynamics Question 187
A Container having 1 mole of a gas at a temperature 27°C has a movable piston which maintains constant pressure in a 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=n R\Delta T $
$ =1\times 8.31\times 100 $
$ =831\approx 814\ \text{J}$
BETA
