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JEE Main · 2024 · 29 Jan 2024 · Shift 1 · Some Basic Concepts of Chemistry

A solution of

H_{2} SO_{4}

is

31.4% H_{2} SO_{4}

by mass and has a density of

1.25 g / mL

. The molarity of the

H_{2} SO_{4}

solution is ____ M (nearest integer)
[Given molar mass of

H_{2} SO_{4} = 98 g mol^{- 1}

]

Answer: 4

Solution

M = \frac{% ( w / w ) \times density \times 10}{molar mass} = \frac{31.4 \times 1.25 \times 10}{98} = \frac{392.5}{98} = 4.005 \approx 4

Key confirmed: 4 (nearest integer).

JEE Main · 2024 · 29 Jan 2024 · Shift 1 · Integer answer

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