Question

How do solutions of electrolytes differ from those of non-electrolytes in their colligative properties?

Answer 1

The colligative properties of a solutions depend on the total number of solute particles present in solution.

now in case of non-electrolytes the number of solute molecules = no of non-electrolyte moleclules as there is no dissociation occur.

whereas, in case of electrolyte A_xB_y, it will dissociate to form x molecule of A^y+ ion and y molecule of B^x- ion. total no of ion = (x + y) for one molecule of electrolyte. that means one mole of electrolyte gives (x + y) mole of solute.

that is why the colgative properties of electrolytes and non-electrolytes are quite different