Question

The freezing point of equimolal aqueous solution will be highest for

• A. $C _{6} H _{5} NH _{3} Cl$
• B. $La \left( NO _{3}\right)_{3}$
• C. glucose
• D. $Ca \left( NO _{3}\right)_{2}$

Answer 1

Answer: (C)

glucose

Answer 2

Glucose is a non-electrolyte, hence $i=1$, while others are electrolyte, hence $i>1$. $\therefore \Delta T_{f}=i \times k_{f} \times$ molality The value of $\Delta T_{f}$ is lowest for glucose, hence its freezing point is maximum.