Chemical Thermodynamics Question 46
Question: The work done to contract a gas in a cylinder, is 462 joules. 128 joule energy is evolved in the process. What will be the internal energy change in the process [MP PMT 2003]
Options:
A) + 590 joules
B) - 334 joules
C) + 334 joules
D) - 590 joules
Show Answer
Answer:
Correct Answer: C
Solution:
As the work is done on system, it will be positive i.e. $ W=+462,joule,,E=-128,joule $ (heat is evolving) From the Ist law of thermodynamics $ \Delta E=q+w=(-128)+(+462)=+334,Joules. $
