We can calculate the amount of freezing point depression that will occur using the following equation: ΔT = ikfm where ΔT is the amount of the change in the freezing point, i is the number of particles dissolved, kf is a constant (different for each solvent), and m is the concentration of dissolved material. This concentration has units of mol per kg solvent.  With this in mind, let's calculate the amount of depression that will occur when 5 g of sugar (sucrose) is dissolved into 0.250 kg of water. Remember when sucrose dissolves in water remains as one particle. The kf for water is 0.512 0C/m.   Report your answer with two decimal points and no units.

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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We can calculate the amount of freezing point depression that will occur using the following equation:

ΔT = ikfm

where ΔT is the amount of the change in the freezing point, i is the number of particles dissolved, kf is a constant (different for each solvent), and m is the concentration of dissolved material. This concentration has units of mol per kg solvent. 

With this in mind, let's calculate the amount of depression that will occur when 5 g of sugar (sucrose) is dissolved into 0.250 kg of water. Remember when sucrose dissolves in water remains as one particle. The kf for water is 0.512 0C/m.

 

Report your answer with two decimal points and no units.

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