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Chemistry Class 12th Chemistry NCERT Exemplar Solutions Class 12th Chapter One Some Basic Concepts of Chemistry

A commercially sold conc. HCl is 35% HCl by mass. If the density of this commercial acid is 1.46 g/mL, the molarity of this solution is

Option 1 -

10.2 M

Option 2 -

12.5 M

Option 3 -

14.0 M

Option 4 -

18.2 M

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1 Answer

Answered by

Payal Gupta | Contributor-Level 10

2 months ago

Correct Option - 3

Detailed Solution:

$M o l a l i t y = \frac{m o l e s o f s o l u t e \times 1000}{w t o f s o l v e n t (g m)}$

$M o l a l i t y = \frac{35 \times 1000 \times 1.46}{36.5 \times 100}$ = 14.0 M

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A commercially sold conc. HCl is 35% HCl by mass. If the density of this commercial acid is 1.46 g/mL, the molarity of this solution is

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