Why do we need Van't Hoff factor - Chemistry - Solutions

Question

Why do we need Van't Hoff factor?

Balaram Shil · Accepted Answer

Dear Student, Van't Hoff (i) factor helps in the determination of
extent of association and dissociation which will result in the
abnormal molar mass of a substance Van't Hoff factor can be
calculated as : i = Normal molar massAbnormal molar mass i =
Observed colligative property Calculated colligative property =
Total number of moles of particles after association or
dissociation Number of moles of particles before association or
dissociation For association , value of i < 1 For dissociation ,
i > 1 For no association or dissociation , i = 1