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August 20, 2014

Homework Help: Chemistry

Posted by Trixie on Monday, February 15, 2010 at 6:57pm.

A 1.00% by mass MgSO4(aq) solution has a freezing point of -0.192C. Water has a kf of 1.86 (Kkg)/mol.
(a) Estimate the van't Hoff i factor from the data.


(b) Determine the total molality of all solute species.

I can probably figure out the second part of the question once I learn how to do the first. I am confused about how to determine what the van't Hoff i factor is. I thought it would be either 6--assuming there were 6 particles in MgSO4...since htat was wrong my next guess was 3. But clearly I'm approaching this the wrong way....

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