In the Freezing Point Depression experiment, you will calculate the colligative

Question

In the Freezing Point Depression experiment, you will calculate the colligative molality of the solutions you produce, the freezing point depression, and the predicted boiling point of the resulting solutions. This question will give you practice doing this before you come to lab.

In the Freezing Point Depression experiment, you will calculate the colligative morality of the solutions you produce, the freezing point depression, and the predicted boiling point of the resulting solutions. This question will give you practice doing this before you come to lab.

Explanation / Answer

a) moles of solute = 0.66/123.44= 0.00535 moles

b)molality = no.of moles of solute/wt of solvent in Kg

               = 0.00535/0.0085 = 0.629 molal

c)DTf = Kf m

DTf = 1.86 *0.629 = 1.17 oC

d) Tf = - 1.17 0C

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