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JEE Main 2019 Chemistry question

ChemistryEquilibriumJEE Main 2019

A mixture of 100 m mol of Ca(OH) and 2 g of sodium sulphate was dissolved in water and the volume was made up to 100 mL. The mass of calcium sulphate formed and the concentration of OH in resulting solution, respectively, are: (Molar mass of Ca(OH), NaSO and CaSO are 74, 143 and 136 g mol, respectively; of Ca(OH) is )

Answer: (C)

Solution

NaSO = 0.014 mol ⇒ CaSO = 0.014 × 136 ≈ 1.9 g; 0.028 mol NaOH

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Question ID VK-010683