Chemical Thermodynamics Question 349
Question: An ideal gas expands against a constant external pressure of 2.0 atmosphere from 20 litre to 40 litre and absorbs 10 kJ of heat from surrounding. What is the change in internal energy of the system- (given : 1 atm-litre = 101.3 J)
Options:
A) 4052 J
B) 5948 J
C) 14052 J
D) 9940 J
Show Answer
Answer:
Correct Answer: B
Solution:
- $ \Delta U=q+w $
$ =10\times 1000-2\times ( 20 )\times 101.3=5948J $
