Chemistry Question from JEE Main 2023 · 1 February, Shift 1

25 mL of an aqueous solution of KCl was found to require 20 mL of 1 M AgNO${}_3$ solution when titrated using K${}_2$CrO${}_4$ as an indicator. What is the depression in freezing point of KCl solution of the given concentration? _____

(Given: $K_f = 2.0 \, K \, kg \, mol^{-1}$) Assume

1. 100% ionization and
2. density of the aqueous solution as $1 \, g \, mL^{-1}$