Asked by Kallie
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, lets calculate the amount of depression that will occur when 5 g of sodium chloride is dissolved into 0.250 kg of water. Remember when sodium chloride dissolves in water it breaks into two particles. The kf for water is 1.86 0C/m.
Report you answer with two decimal points and no units.
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, lets calculate the amount of depression that will occur when 5 g of sodium chloride is dissolved into 0.250 kg of water. Remember when sodium chloride dissolves in water it breaks into two particles. The kf for water is 1.86 0C/m.
Report you answer with two decimal points and no units.
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