Question

Assuming equal concentrations and complete dissociation, rank these aqueous solutions by their freezing points.

CoCl3 K2CO3 KNO3

Answer 1

The equation is delta T = i*Kf*m
i = van't Hoff factor which is the number of particles. CoCl3 is 4, K3CO3 is 3, KNO3 is 2.
Kf is a constant
The problem tells you m is constant, so.....

Answer 2

DrBob222,
you put K3CO3 not K2CO3

Answer 3

Highest freezing point:
KNO3
K2SO4
CoCl3
Lowest freezing point