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October 21, 2014

Homework Help: Chemistry

Posted by Nikita on Sunday, January 16, 2011 at 7:41pm.

Assuming complete dissociation of the solute, how many grams of KNO3 must be added to 275 mL of water to produce a solution that freezes at -14.5 degrees celcius ? The freezing point for pure water is 0.0 degrees celcius and Kf is equal to 1.86 degrees celcius/m.

If the 3.90 m solution from Part A boils at 103.45 degrees celcius, what is the actual value of the van't Hoff factor, i? The boiling point of pure water is 100.00 degrees celcius and Kb is equal to 0.512 degrees celcius/m

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