JEE Main 2021ChemistrySolutionsEasyNumerical

JEE Main 2021 — Solutions Question with Solution

JEE Main 2021 (25 Feb Shift 1)

Question

1 molal aqueous solution of an electrolyte A2 B3 is 60% ionised. The boiling point of the solution at 1 atm is _____ K. (Rounded-off to the nearest integer) [Given Kb for H2O=0.52 K kg mol-1]

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Show full solutionCorrect answer: 375
Correct answer
375

Step-by-step explanation

ΔTb=iKbm

=1+4α×0.52×1

=3.4×0.52×1=1.768

Tb=1.768+373.15=374.918 K

=375 K

Hence answer is 375

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About this question

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