Asolution of water (kf=1.86 ∘c/m) and glucose freezes at − 3.75 ∘c. what is the molal concentration of glucose in this solution? assume that the freezing point of pure water is 0.00 ∘c.

Glucose freezes at -3.75 °C and freezing point of pure water is 0 °C. Thus, depression in freezing point or can be calculated as follows:

It is related to molal concentration as follows:

Here, is freezing point depression constant.

Rearranging to calculate molal concentration:

Therefore, molal concentration of glucose in the solution will be 2.02 m.

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