Chemistry - Thermodynamics - I Question with Solution | TestHub
ChemistryThermodynamics - IAdiabatic Process/PolytropicMedium2 minQB
ChemistryMediumsingle choice
Passage / Comprehension
A cylindrical container of volume 44.8 L is containing equal number of moles of an ideal monoatomic gas in two sections A and B, separated by an adiabatic frictionless piston as shown in the figure. The initial temperature and pressure of gas in both section is 27.3 K and 1 atm. Now, gas in section A is slowly heated till the volume of section B becomes one-eighth of the initial volume.
The change in enthalpy of gas in Section A is
Options:
Answer:
B
Solution:
ΔHA = n·Cp·ΔT = 10 × (5/2 × 2 cal/K-mol) × (1638 − 27.3) = 10 × 5 × 1610.7 cal ≈ 80,535 cal ≈ 80.53 kcal. Matches (b).
Stream:JEESubject:ChemistryTopic:Thermodynamics - ISubtopic:Adiabatic Process/Polytropic
⏱ 2mℹ️ Source: QB
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