Posted by **Megan** on Wednesday, September 8, 2010 at 5:29pm.

Suppose you are given a list of solutions (all with nonvolatile solutes) and their concentrations. You pick out the one with the lowest freezing point. It should also have (pick all that apply):

the lowest boiling point

the highest osmotic pressure

the lowest solvent vapor pressure

the highest boiling point

the highest solvent vapor pressure

the lowest osmotic pressure

i picked lowest boiling point, highest solvent vapor pressure, and lowest osmotic pressure. But it was wrong.

- chemistry -
**DrBob222**, Wednesday, September 8, 2010 at 6:31pm
I think you picked all of the wrong ones.

delta T = Kf*m.

Thus for delta T to be the most, the freezing point will be the lowest. Now convert that information to boiling point.

delta T = Kf*m

For delta T to b the most, that means boiling point will be the highest.

pi = MRT for osmotic pressure. Since delta T is the highest, then molality must be the highest; therefore, pi (osmotic pressure) must be the highest.

P_{soln} = X<solvent>*P^{o}_{solvent}

If delta T is highest, molality must be the most(for the solute); therefore, the SOLVENT must be less and that will give a smaller vapor pressure.

Check my thinking.

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