JEE Main 2024 Chemistry question
A solution of H₂SO₄ is 31.4% H₂SO₄ by mass and has a density of 1.25 g/mL. The molarity of the H₂SO₄ solution is M (nearest integer) [Given molar mass of H₂SO₄ = 98 g mol⁻¹]
Answer: 4
Solution
1 L of solution has mass 1250 g, containing 1250 × 31.4/100 g of H₂SO₄. Molarity = (1250 × 31.4)/(98 × 100) = 4.0 M.