JEE Main 2023ChemistrySome Basic Concepts Of ChemistryConcentration TermseasyMCQ

JEE Main 2023 — Some Basic Concepts Of Chemistry Question with Solution

From: JEE Main 2023 (Online) 25th January Evening Shift

Question

What is the mass ratio of ethylene glycol (, molar mass = 62 g/mol) required for making 500 g of 0.25 molal aqueous solution and 250 mL of 0.25 molar aqueous solution?

Choose an option

Show full solutionCorrect option: C
Correct answer
C2 : 1

Step-by-step explanation

For 500 g of 0.25 molal aqueous solution,

0.25 = = ......(1)

For 250 mL of 0.25 molar aqueous solution

.......(2)

Dividing equation (1) by (2), we get







Note :

(1) Molality of solution is defined as number of moles of solute present per kg of solvent.

(2) Molarity of solution is defined as number of moles of solute present per litre of solution.

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About this question

This is a previous-year question from JEE Main 2023, covering the Some Basic Concepts Of Chemistry 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.