JEE Main 2021ChemistryStates of MatterEasyNumerical

JEE Main 2021 — States of Matter Question with Solution

JEE Main 2021 (24 Feb Shift 2)

Question

The volume occupied by 4.75 g of acetylene gas at 50°C and 740 mm Hg pressure is ____________ L. (Rounded off to the nearest integer)

[Given R=0.0826 L atm K-1 mol-1]

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Show full solutionCorrect answer: 5
Correct answer
5

Step-by-step explanation

Given mass=4.75 g⇒C2H2g

⇒Moles=4.7526 mol

Temperature=50+273=323 K

P=740760atm

R=0.0826ℓ atmmol K

⇒V=nRTP=4.7526×0.0826×323740760

⇒V=96314.07819240=5.0059ℓ≃5ℓ

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About this question

This is a previous-year question from JEE Main 2021, covering the States of Matter 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.