Thermodynamics Question 246
Question: 2 k mol of hydrogen at NTP expands isobarically to twice its initial volume. The change in its internal energy is $ (C _{v}=10kJ/kg.K $ and atm pressure $ =1\times 105N/m^{2}) $
Options:
A) 10.9 MJ
B) 9.10 MJ
C) 109 MJ
D) 1.09 MJ
Show Answer
Answer:
Correct Answer: A
Solution:
[a] $ \Delta U=nC,\Delta T=2\times 10^{3}\times 20\times 273=10.9MJ. $
