\( 25 \, \mathrm{mL} \) of an aqueous solution of \( \mathrm{KCl} \) was found to require \( 20 \, \mathrm{mL} \) of \( 1 \, \mathrm{M} \) \( \mathrm{AgNO}_3 \) solution when titrated using \( \mathrm{K}_2\mathrm{CrO}_4 \) as an indicator. What is the depression in freezing point of \( \mathrm{KCl} \) solution of the given concentration? ______ (Nearest integer).
(Given: \( K_f = 2.0 \, \mathrm{K\, kg\, mol^{-1}} \) )
Assume \( (1) \) \( 100\% \) ionization and \( (2) \) density of the aqueous solution as \( 1 \, \mathrm{g\, mL^{-1}} \)
