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Colligative Properties Problem Set
1. What is the freezingpoint of a solution of ethyl alcohol, C2H5OH, that contains 20.0g of the solute in 250.g of water?
2. How many grams of ethylene glycol, C2H4(OH)2, must a researcher add to 500.g of water to yield a solution that freeze at -7.44degC?
3. Calculate hte mass of a mole of a compound (i.e. g/mole) that raises the boiling point of water to 100.78degC when 51g of the compound is dissolved in 500.g of water?
Answer:1)-3.23degC 2)124g 3)68g