[Izzy]

The freezing point of an aqueous barium nitrate solution is -2.65 °C. Determine the apparent molal concentration of barium nitrate. (Kf of water = -1.86 °C/molal)

My approach:

∆T = i*Kf*m

m = ∆T/(i*Kf)

m = ?

i = 3

Kf = -1.86 °C/molal (right? Why am I using the Kf of water instead of barium nitrate?)

∆T = ...

My problem lies with determining the change in temperature. Halp?

*edit* Pfft, never mind. >_> 2.65.

Edited August 11, 2011 by Izzy