The van’t Hoff factor(i) for a compound which undergoes dissociation in one solvent and association in other solvent is respectively

From the value of van’t Hoff factor ,  it is possible to determine the degree of dissociation or association. In case of dissociation, i is greater than 1 ; i=1-α+nα In case of association i is lesser than 1; 1-α+αn