G of a mixture containing NaCl and is dissolved in water

CHEMISTRY · Subjective · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures

Problem

g of a mixture containing NaCl and

\text{CaCl}_2

is dissolved in water. Sodium oxalate on addition to this solution completely converts

\text{CaCl}_2

\text{CaC}_2\text{O}_4

. The

\text{CaC}_2\text{O}_4

is filtered and dissolved in dil.

\text{H}_2\text{SO}_4

. The clear solution requires 22 mL of 0.1 M

\text{KMnO}_4

. Calculate freezing point of an aqueous solution prepared by dissolving 5 g of same mixture containing

\text{CaCl}_2

and NaCl in 100 g water.

K_f

of water is

1.86 \text{ K kg}^{-1} \text{ mol}^{-1}

. Assume complete dissociation of

\text{CaCl}_2

and NaCl.