Question

Van't Hoff factor more than unity indicates that the solute in solution has

• A. associated
• B. dissociated
• C. both
• D. cannot say anything

Answer 1

Answer: (B)

Van't Hoff factor (i)

$\text{=}\frac{\text{Number}\text{of}\text{particles}\text{present}\text{in}\text{the}\text{solution}}{\text{Number}\text{of}\text{formula}\text{units}\text{dissolved}\text{in}\text{the}\text{solution}}$

$i>1$ indicates the particles in the solution are greater than the formula units dissolved in the solution. This is possible, if the solute undergoes dissociation.