The freezing point of a 0.060 m solution of magnesium sulfate (MgSO₄) is -0.18°C. What is the value of the van 't Hoff factor for this nonideal solution? K_f for water is 1.86°C/m. A) 1.0 B) 1.3 C) 1.6 D) 2.0 E) 3.0

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The van 't Hoff factor (i) is calculated using the formula ΔTf = i * Kf * m. Given ΔTf = 0.18°C, Kf = 1.86°C/m, and m = 0.060 m, solving for i gives i = 0.18 / (1.86 * 0.060) ≈ 1.6.

The Freezing Point of a 0