1 mole of NH3 gas at 27C is expanded adaibatic condition to make volume 8 times (γ=1.33). Final temperature and work done respectively are-

1. 150 K, 900 cal

2. 150 K, 400 cal

3. 250 K, 1000 cal

4. 200 K, 800 cal

Concept Videos :-

#30 | 2nd Law of Thermodynamics

Concept Questions :-

CP and CV and Relation for Real Gas

Temperature and volume are related for adiabatic process as : T2V2γ-1=T1V1γ-1 T2=T1V1γ-1V1γ-1=T1V1V2γ-1=300181/3=300×12=150 KCPCV=γ=43  CV=3R & CP=4RAdiabatic work donew=-CVT=-3×2×150-300=900 cal

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