JEE Main 2016ChemistryThermodynamics (C)MediumMCQ

JEE Main 2016 — Thermodynamics (C) Question with Solution

JEE Main 2016 (10 Apr Online)

Question

If 100 mole of H2O2 decompose at 1 bar and 300 K, the work is done (kJ) by one mole of O2(g) as it expands against 1 bar pressure is:

2H2O2l⇌2H2Ol+O2(g)

R=8.3 J K-1 mol-1

Choose an option

Show full solutionCorrect option: A
Correct answer
A124.50

Step-by-step explanation

Irreversible process

W=P∆V=nRT

2H2O2100 moll⇌2H2Ol+O2   50 molg

∴ 100 mol H2O2 on decomposition will give 50 mol O2

=50×8.3×300

=124500 J

=124.50 kJ

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About this question

This is a previous-year question from JEE Main 2016, covering the Thermodynamics (C) chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.