Which has the highest, second highest, third highest, and lowest boiling points?

1.0.20 m MnSO4
2.9.6E-2 m Al2(SO4)3
3.8.4E-2 m Al2(SO4)3
4. 0.45 m Sucrose(nonelectrolyte)

[I know it is m times i but not sure how to get "i"]

1 answer

I assume you mean boiling point as in solutions and not boiling point of the pure material.
i is the van't Hoff factor and is the number of particles
MnSO4 ==> Mn^2+ + SO4^2- so i = 2