MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and ThermochemistryEnthalpy and Heat Capacity of A System
1 mole of NH₃ gas at 27°C is expanded in reversible adiabatic condition to make volume 8 times (γ = 1.33). Final temperature and work done by the gas respectively are:
A.150 K, 900 cal✓ Correct
B.150 K, 400 cal
C.250 K, 1000 cal
D.200 K, 800 cal
Explanation
1 1 1 1 2 2 T V T V 2 1 V 8V 4 1 1 3 2 T 8 T i.e. 1 2 T 2T 2 300 T 15K 2 nR T 2 150 w 903cal 1 1/ 3 x
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