Posted by **lisa** on Monday, September 13, 2010 at 11:43pm.

the freezing point of ethanol (C2H5OH) is -114.6C. the molal freezing point depression constant for ethanol is 2.00C/m. what is the freezing point (C) of a solution prepared by dissolving 50.0 g of glycerin (C3H8O3, A nonelectrolyte) in 200 g of ethanol.

any help would be appreciated im very confused.

- molal -
**DrBob222**, Tuesday, September 14, 2010 at 12:02am
moles glycerin = grams/molar mass

solve for moles glycerin.

molality = mole/kg solvent

solve for molality

delta T = K*m

solve for delta T, then freezing point.

- molal -
**lisa**, Wednesday, September 15, 2010 at 7:21pm
thank you looks like i double posted... sorry

- molal -
**lisa**, Wednesday, September 15, 2010 at 7:42pm
i tried to solve it on my own but im confused about the last part, this i what i have so far..

moles of glycerin= 50.0/92.10=0.54

molality=0.54/0.200=2.7

is that right?

im a little confused about the numbers im supposed to use for step 3...

## Answer This Question

## Related Questions

- 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 - The freezing point of ethanol is -114.6 deg Celsius and its Kf value...
- chemistry - 1. Find the molality of the solution prepared by dissolving 0.238g ...
- Chemistry - The freezing point of ethanol is -114.6 C and its Kf value is 2.00 C...
- Chemistry - If the freezing point of pure toluene is -95.15 oC and its freezing ...
- chem - What is the freezing point (°C) of a solution prepared by dissolving 11....
- chemistry - Calculate the freezing point of 0.15 m calcium chloride aqueous ...

More Related Questions