Answer to Question #6728 in Physical Chemistry for jennifer kruz

Question

what is the van't hoff factor of Cr2(SO4)3

Answer 1

For most ionic compounds dissolved in water, the van 't Hoff factor is equal to the number of discrete ions in a formula unit of the substance, so

Cr₂(SO₄)₃ <=> 2Cr³⁺ + 3SO₄^2-

i = 2 + 3 = 5