Elevation in boiling point for 1.5 molal solution of glucose in water is 4K. The depression in freezing point for 3 molal solution of glucose in water is 4K.The ratio of molal elevation constant to molal depression constant (Kb/Kf) is.

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Elevation in boiling point for 1.5 molal solution of glucose in water is 4K. The depression in freezing point for 3 molal solution of glucose in water is 4K.The ratio of molal elevation constant to molal depression constant $(K_{b} / K_{f})$ is.

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Detailed Solution

$Δ T_{b} = i K_{b} m$

$\begin{array}{l} Δ T_{f} = i K_{f} m \\ \frac{4}{4} = \frac{K_{b} 1.5}{K_{f} 3} \\ \frac{K_{b}}{K_{f}} = 2 \end{array}$

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