VAPOR PRESSURE OF SOLUTIONS
A. 10.0 g sample of the solid sucrose ( sugar, C12H22O11) was dissolved in 200.0 g of water. What will the vapor pressure of this solution be at 25C, if the normal vapor pressure of pure water at 25C is 23.8 torr?
B. Predict the vapor pressure of a solution prepared by dissolving 49.4 g of solid calcium chloride, CaCl, in150 g of water at 25C. The vapor pressure of water at 25C is 23.8 torr.
FREEZING POINT DEPRESSION/BOILING POINT ELEVATION OF SOLUTIONS
A. The freezing point of pure liquid benzene, C6H6, is 5.48 C. when 20.0 g of an unknown compound is dissolved in 500.0 g of benzene, the freezing poioint of the resulting solution is 3.77 C. what is the molecular weight of the unknown compount if Kf / (benzene) = 5.12 C. kg/mol?
B. What is the normal boiling point of a solution prepared by dissolving 54.6 grams of potassium chloride, KCl, in 400 mL of water (d = 0.997 g/mL, Kb= 0.51 C kg/mol)?
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2006-11-26
16:22:11
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1 answers
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vtxcuddlixgrl
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Chemistry