100% of a solute is trimerised in a solution. Van't Hoff factor of the solute in the solution is

Due to association, number of particles decreases…. i < 1….always ; Van't Hoff factor,  i=1-α+αn ; n=2…..dimerisation….i=1-α2; n=3…..trimerisation….i=1-2α3; n=4…..tetramerisation….i=1-3α4;α= Degree of association ;Ex ; For 5% associated solute,  α=5100= 0.05 ;0.1, 0.15, 0.2, 0.25, 0.3…..for 10%, 15%, 20%, 25%, 30% association ;α for x% associated solute = x100; a) i=1-20.13…10% trimerised ; b) i=1-20.23…20% trimerised ; c) i=1-20.33…30% trimerised ; d) i=1-20.43…40% trimerised ;