Chemistry - Thermodynamics - I Question with Solution | TestHub
ChemistryThermodynamics - IAdiabatic Process/PolytropicMedium2 minQB
ChemistryMediumsingle choice
Passage / Comprehension
The adiabatic compression of a mixture of 3 volumes of hydrogen and 1 volume of oxygen from 640 ml to 20 ml caused explosion. The initial pressure and temperature of the gaseous mixture were 2 atm and 127°C.
What is the magnitude of maximum work performed by the gaseous mixture before explosion?
Options:
Answer:
C
Solution:
n = PV/RT = (2 × 0.640)/(0.0821 × 400) ≈ 0.039 mol. Adiabatic, q = 0: |w| = |ΔU| = n·Cv·ΔT = 0.039 × (5/2 × 8.314) × (1600 − 400) ≈ 0.039 × 20.785 × 1200 ≈ 972 J. Matches (c).
Stream:JEESubject:ChemistryTopic:Thermodynamics - ISubtopic:Adiabatic Process/Polytropic
⏱ 2mℹ️ Source: QB
Doubts & Discussion
Loading discussions...
