Which of the following 0.10 m aqueous solution will have the lowest freezing point?\

Question

Professor PC Thomas Classes · Answer

(c) : Since $\mathrm{Al}_{2}\left(\mathrm{SO}_{4}\right)_{3}$ gives maximum number of ions on dissociation, therefore it will have the lowest freezing point. $$ \Delta T_{f}=i K_{f} \cdot m $$