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Question

A solution freezes at -0.558°C. What is the molality if Kf = 1.86 K kg mol⁻¹ ?

Options

Choose one · Correct answer highlighted

Explanation

Δ Tf = Kf · m . 0.558 = 1.86 · m . m = (0.558/1.86) = 0.3 mol/kg .