ThermodynamicsHard
Question
1 mol of NH3 gas at 27oC is expanded under adiabatic condition to make volume 8 times (g = 1.33). Final temperature and work done, respectively, are
Options
A.150 K, 900 cal
B.150 K, 400 cal
C.250 K, 1000 cal
D.200 K, 800 cal
Solution
T2 = T1 
= 150 K
w = - CVDT = - CV(T2 - T1)
= -3 × 2 × (150 - 300)
= 900 cal
= 150 Kw = - CVDT = - CV(T2 - T1)
= -3 × 2 × (150 - 300)
= 900 cal
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