JEE Main 2024ChemistrySolutionsMediumNumerical

JEE Main 2024 — Solutions Question with Solution

JEE Main 2024 (29 Jan Shift 1)

Question

A solution of H2SO4 is 31.4% H2SO4 by mass and has a density of 1.25 g/mL. The molarity of the H2SO4 solution is M (nearest integer) [Given molar mass of H2SO4=98 g mol-1]

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Show full solutionCorrect answer: 4
Correct answer
4

Step-by-step explanation

Given, Density= 1.25 g/mL,

Molar mass of H2SO4=98 g mol-1

Molarity is defined as no. of moles of solute present in one litre of solution. Thus,

Molarity= No. of moles of soluteVolume of solution in L

No. of moles= mass/ molar mass

M=nsolute V×1000

=31.4981001.25×1000

=4.005≈4

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About this question

This is a previous-year question from JEE Main 2024, covering the Solutions 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.