Asked by paula

What are the differences in measuring the molar mass using freezing point depression between studying ionic solids and molecular solids?
Answered by DrBob222
The complete freezing point depression method or the complete boiling point elevation method SHOULD include the van't Hoff factor which is the moles of particles in the solution. For molecular solids, the van't Hoff factor is 1, for ionic solids it is the number of particles which dissociate; i.e., NaCl would be 2, Na2SO4 would be 3, k3PO4 would be 4, etc.
delta T = i*Kf*m
or delta T = i*Kb*m
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