Relationship between van’t Hoff’s factor (i) and degree of dissociation α is

Step-by-step solution

Relationship between vant Hoff factor (i) and degree of dissociation α is given by α = 1 - i n ' - 1 Where, n is the number of ions formed after dissociation. The relationship can be obtained as follows: For the reaction, A ⇌ n ' B Initially 1 mole 0 After dissociation 1 - α mole n’ α Total number of moles present in the solution = 1 - α + n ' α = 1 + n ' - 1 α Van’t Hoff factor, i = 1 + n ' - 1 , α > 1 if n ' ≥ 2 ∴ α = i - 1 n ' - 1