JEE Main 2022ChemistrySolutionsRelative Lowering Of Vapour Pressure And Roults LaweasyNumerical

JEE Main 2022Solutions Question with Solution

From: JEE Main 2022 (Online) 27th July Evening Shift

Question

When a certain amount of solid A is dissolved in of water at to make a dilute solution, the vapour pressure of the solution is reduced to one-half of that of pure water. The vapour pressure of pure water is . The number of moles of solute A added is _____________. (Nearest Integer)

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Show full solutionCorrect answer: 5.55
Correct answer
5.55

Step-by-step explanation

Diliute solution given:





solute

More accurate approach:





solute solvent

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About this question

This is a previous-year question from JEE Main 2022, 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.