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<center><b>Colligative Properties Problem Set</b></center> <br> <br> <br> 1. What is the freezingpoint of a solution of ethyl alcohol, C<sub>2</sub>H<sub>5</sub><nowiki>OH</nowiki>, that contains 20.0g of the solute in 250.g of water?<br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> 2. How many grams of ethylene glycol, C<sub>2</sub>H<sub>4</sub>(<nowiki>OH</nowiki>)<sub>2</sub>, must a researcher add to 500.g of water to yield a solution that freeze at -7.44degC?<br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> 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?<br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> Answer:1)-3.23degC 2)124g 3)68g
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