Colligative properties - problems

Table of Contents:

02:06 - What is the change in vapor pressure when 164 g glycerin (C3H8O3) is added to 338 mL of H2O at 39.8oC? The vapor pressure of pure H2O at 39.8oC is 54.74 torr. The density of H2O at 39.8oC is 0.992 g/mL.
04:27 - What is the change in vapor pressure when 164 g glycerin (C3H8O3) is added to 338 mL of H2O at 39.8oC? The vapor pressure of pure H2O at 39.8oC is 54.74 torr. The density of H2O at 39.8oC is 0.992 g/mL.
05:08 - What is the boiling point of seawater? Assume that the average concentration of salt in seawater is 0.560 mol NaCl/kilogram, the Kb value is 0.52oC/m, and that NaCl dissociates into two ions.
07:15 - What is the boiling point of seawater? Assume that the average concentration of salt in seawater is 0.560 mol NaCl/kilogram, the Kb value is 0.52oC/m, and that NaCl dissociates into two ions.
08:37 - The freezing point of a solution that contains 1.00 g of a molecular unknown compound, A, dissolved in 10.0 g of benzene is found to be 2.07oC. The freezing point of pure benzene is 5.48oC. The molal freezing-point-depression constant of benzene is 5.12oC/m. What is the molecular weight of the unknown compound?
11:24 - The freezing point depression of a 0.10 m solution of HF(aq) solution is -.201oC. Calculate the percent dissociation of HF(aq).