Thursday
September 3, 2015

Homework Help: Chemistry

Posted by natali on Friday, April 27, 2007 at 2:48pm.

a solution of 0.2113 g of water dissolv ed in 25g of a solvent freezes at 11.5 degrees celcius below the freezing point of the solvent. what is the Kf for the solvent?
A)0.735
B)1.36
c)5.39
D)24.5

Help!!!

delta T = Kf*molality
Calculate molality = #mols solute/kg solvent, plug into the first equation and calculate Kf.
Post your work if you need further assistance.

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