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JEE Main 2021Electrochemistry Question with Solution

JEE Main 2021 (18 Mar Shift 2)

Question

The molar conductivity at infinite dilution of barium chloride, sulphuric arid and hydrochloric acid are 280, 860 426 Scm2mol-1 respectively. The molar conductivity at infinite dilution of barium sulphate is ___ Scm2 mol-1 ( Round off to the Nearest Integer).

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Show full solutionCorrect answer: 288
Correct answer
288

Step-by-step explanation

From Kohlrausch's law

ΛmBaSO4=λmBa2++λmSO42-

ΛmBaSO4=ΛmBaCl2+ΛmH2SO4-2Λm(HCl)

=280+860-2(426)

=288 Scm2 mol-1

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About this question

This is a previous-year question from JEE Main 2021, covering the Electrochemistry 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.