What is Van't Hoff factor ? What possible values can it have If the solute molecules undergo dissociation?

Explanation

Van.t Hoff factor : Van.t Hoff introduced a factor .i. called Van.t Hoff factor, to express the extent of association or dissociation in solution. It is the ratio of normal and observed molar masses of the solute
`i=("Normal molar mass"(M_(n)))/("Observed molar mass"(M_(0)))`
In case of dissociation value of `i gt 1`