Question

Van't Hoffs factor for a solution is less than one, what is the conclusion drawn from it.

Answer 1

Van't Hoff factor for a solution is less than one, the conclusion drawn from it is that the solution undergoes association.

The Van't Hoff factor $i=\frac{\text{number of solute particles present in solution}}{\text{theoretical number of solute particles due to dissolution of non electrolyte}}$

$i=\frac{\text{n observed}}{\text{n theoretical}}$

Van't Hoff factor for a solution is less than one

$i=\frac{\text{n observed}}{\text{n theoretical}}<1$

$=\text{n observed}<\text{n theoretical}$

This suggests association.

Note: For dissociation, $i>1$.