Chemistry - Thermodynamics - I Question with Solution | TestHub
ChemistryThermodynamics - IFirst law of ThermodynamicsEasy2 minQB
ChemistryEasystatement
Statement 1: When an ideal gas expands isothermally into an evacuated rigid container, its temperature remains unchanged.
Statement 2: The molecules of an ideal gas have negligible size.
Options:
Answer:
B
Solution:
Free expansion gives w=0 and, with the gas staying at its initial temperature, q=0, so Δ U=0; U of an ideal gas depends only on T, hence T is unchanged: I correct. II is a true ideal gas assumption, but the constancy of T comes from the absence of intermolecular attraction, not from molecular size. Answer (b).
Stream:JEESubject:ChemistryTopic:Thermodynamics - ISubtopic:First law of Thermodynamics
⏱ 2mℹ️ Source: QB
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