What Causes Lower Freezing Point Depression: Ionization or Non-Ionization?

[magma_saber]

Homework Statement

One mole of two different compounds happens to weight the same, but one compound ionizes in water and the other does not. Which will give the lowest freezing point depression?

Homework Equations

The Attempt at a Solution

 

[Borek]

You just don't ask. You try, you tell us what you did, we push you in the right direction.

 

[magma_saber]

first of all what does lower freezing point depression mean? does it mean the lower freezing point?

 

[Borek]

Water freezes at 0°C. Imagine that when you dissolve one of these substances water freezes at -1°C, if you dissolve the other - water freezes at -2°C. Difference between 0 and the actual freezing point is called freezing point depression, in this case it will be 1 or 2 degrees depending on the substance.

But you should know it all, if you are asked this question.