# Which of the following exhibits the greater freezing - point lowering ?

$\begin{array}{1 1} 0.1\;mol\;kg^{-1} \;NaCl \\ 0.1\;mol\;kg^{-1} \;CaCl_2 \\ 0.1\;mol\;kg^{-1} \;HC_2H_3O_2 \\ 0.1\;mol\;kg^{-1} \;NaC_2H_3O_2 \end{array}$

Freezing-point depression is the decrease of the freezing point of a solvent on addition of a non-volatile solute.
Answer : $0.1\;mol\;kg^{-1} \;CaCl_2$ exhibits the greater freezing point -lowering
edited Feb 19