Question

The substance A when dissolved in solvent B shows the molecular mass corresponding to $A_3$. The vant Hoff factor will be

• A. 1
• B. 2
• C. 3
• D. 44564

Answer 1

Answer: (D)

44564

Answer 2

Van't Hoff factor. $i = \frac{Normal mol, mass}{Observed mol. mass }$ As the solute associates in solution, and gives mass $A_3 \, \therefore \, i = \frac{A}{3A} = 1/3$