Choose the Aqueous Solution Below with the Highest Freezing Point

Multiple Choice

Choose the aqueous solution below with the highest freezing point. These are all solutions of nonvolatile solutes and you should assume ideal van't Hoff factors where applicable.

A) 0.200 mol kg^-1 Ca(ClO₄) ₂
B) 0.200 mol kg^-1 K₃PO₃
C) 0.200 mol kg^-1 HOCH₂CH₂OH
D) 0.200 mol kg^-1 Ba(NO₃) ₂
E) These all have the same freezing point.