Which of the following aqueous solution has minimum freezing point?\

Question

Professor PC Thomas Classes · Answer

(a) : Here, $\Delta T_{f}=i 	imes K_{f} 	imes m$\ van't Hoff factor, $i=2$ for NaCl , so conc. $=0.02$, which is maximum in the present case.\ Hence, $\Delta T_{f}$ is maximum or freezing point is minimum in 0.01 m NaCl .