A .50 m solution of which solute has the largest van't hoff factor? a) CaCl2
b) K3PO4
c) LiCO3
d) NaNO3

b) K3PO4

Explanation:

Hello,

In this case, since the van't Hoff factor for ionizing solutes equals the number of ionized particles (ions), the van't Hoff factor for each salt is:

a) CaCl2 : i=3 since two chloride anions and one calcium cation are ionized.

b) K3PO4 : i=4 since one phosphate anion and three potassium cations are ionized.

c) Li2CO3 : i=3 since one carbonate anions and two lithium cations are ionized.

d) NaNO3: i=2 since one nitrate anion and one sodium cation are ionized.

Therefore, b) K3PO4 has the largest van't Hoff factor as more ions are formed during its dissolution.

Best regards.