JEE Main 2021 — Some Basic Concepts Of Chemistry Question with Solution
From: JEE Main 2021 (Online) 26th August Morning Shift
Question
An aqueous KCl solution of density 1.20 g mL1 has a molality of 3.30 mol kg1. The molarity of the solution in mol L1 is ____________ (Nearest integer) [Molar mass of KCl = 74.5]
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Show full solutionCorrect answer: 3.17
Correct answer
3.17
Step-by-step explanation
1000 kg solvent has 3.3 moles of KCl
1000 kg solvent 3.3 74.5 gm KCl 245.85
Weight of solution = 1245.85 gm
Volume of solution = ml
So molarity =
1000 kg solvent 3.3 74.5 gm KCl 245.85
Weight of solution = 1245.85 gm
Volume of solution = ml
So molarity =
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