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Practice question

MCQ

Question

What is the freezing point depression of a solution containing 12 g of a non-electrolyte solute (molar mass = 60 g/mol) in 200 g of water? ( Kf = 1.86 K kg mol⁻¹ )

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Explanation

Moles of solute = (12/60) = 0.2 mol . Molality = (0.2/0.2) =appendicitis = 1 mol/kg . Δ Tf = Kf · m = 1.86 × 1 = 1.86 K .

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