Chemistry - Thermodynamics - I Question with Solution | TestHub
ChemistryThermodynamics - IAdiabatic Process/PolytropicEasy2 minQB
ChemistryEasymultiple choice
A gas is adiabatically expanded suddenly, in a single step against constant external pressure, from state I to state II, as shown in the figure. Then
Options:(select one or more)
Answer:
B, D
Solution:
State 1 is (Vo, 3Po) and state 2 is (3Vo, Po); the external pressure is the final pressure Po. q = 0, so Δ U = w = -Po(3Vo - Vo) = -2PoVo: (b) true, (c) false. Δ H = Δ U + Δ(PV) = -2PoVo + (3PoVo - 3PoVo) = -2PoVo: (d) true, (a) false. Ans: (b), (d).
Stream:JEESubject:ChemistryTopic:Thermodynamics - ISubtopic:Adiabatic Process/Polytropic
⏱ 2mℹ️ Source: QB
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