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← JEE Main 2022 · 30 Jul · Shift 2
ChemistryInteger+4 / -1Question 51 of 90

JEE Main 2022 · 30 Jul · Shift 2, Chemistry question 51

The density of 4 molal solution of NaOH is 1.160 g mL−1^{-1}. The molarity of the solution is _______ M. (Given : Molar mass of NaOH = 40 g mol−1^{-1}) (nearest integer)

Answer and worked solution

Official answer: 4

Basis 1000 g water + 4 mol (160 g) NaOH = 1160 g, i.e. 11601.160=1000\frac{1160}{1.160}=1000 mL. Molarity 4 M.

Answer: 4