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Question

A 0.1 molal NaCl solution has a van’t Hoff factor of 1.8. What is the freezing point depression? ( Kf = 1.86 K kg mol⁻¹ )

Options

Choose one · Correct answer highlighted

Explanation

Δ Tf = i · Kf · m . Δ Tf = 1.8 × 1.86 × 0.1 ≈ 0.335 K .