Monday
July 28, 2014

Homework Help: Chemistry

Posted by Lauren on Wednesday, February 13, 2013 at 3:34pm.

The freezing point of ethanol is -114.6 C and its Kf value is 2.00 C/m. What is the freezing point for the solution prepared by dissolving 50.0 g of glycerin (C3H8O3) in 200.0 g ethanol?

I used Change in temp=Kfm
kf=2.00
I calculated m to be 2.1736.
I ended up the answer of -118.4 C but the answer is apparently -120. I'm a few numbers off, can someone explain to me where I went wrong?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - The freezing point of ethanol is -114.6 deg Celsius and its Kf value...
molal - the freezing point of ethanol (C2H5OH) is -114.6C. the molal freezing ...
molal - the freezing point of ethanol (C2H5OH) is -114.6C. the molal freezing ...
molal - the freezing point of ethanol (C2H5OH) is -114.6C. the molal freezing ...
molal - the freezing point of ethanol (C2H5OH) is -114.6C. the molal freezing ...
molal (again) - i tried to solve it on my own but im confused about the last ...
Chemistry - If the freezing point of pure toluene is -95.15 oC and its freezing ...
chemistry - a solution is prepared by mixing 2.17g of an unknown non-electrolyte...
Chemistry - What is the freezing point (C) of a solution prepared by dissolving...
Chemistry - A solution was made by dissolving 62.07 grams of a compound in 500g ...

Search
Members