what is the value of Van't Hoff factor when a solute Al2(SO4)3 undergoes complete dissociation ?
Al2(SO4)3-> it will disoociate as 2Al^3+ and 3SO4^2-....so total number of ions after dissociations =2+3=5...
van't hoff factor=total ions after dissociation/toal ions or molecules before dissociation=5/1=5
