Chemistry - Thermodynamics - I Question with Solution | TestHub
ChemistryThermodynamics - IAdiabatic Process/PolytropicHard2 minQB
ChemistryHardsingle 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 temperature of the gaseous mixture at the moment of explosion?
Options:
Answer:
A
Solution:
T₁ = 127 + 273 = 400 K. T₂ = T₁(V₁/V₂)^(γ−1) = 400 × 320.4 = 400 × 4 = 1600 K. Traps: (b) uses the volume ratio directly (isobaric thinking, 400 × 32); (c) applies the factor 4 to the Celsius temperature and re-converts (127 × 4 + 273); (d) multiplies by 24 instead of 2². Matches (a).
Stream:JEESubject:ChemistryTopic:Thermodynamics - ISubtopic:Adiabatic Process/Polytropic
⏱ 2mℹ️ Source: QB
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