JEE Main 2023 — Solutions Question with Solution

25 mL of an aqueous solution of KCl was found to require 20 mL of 1 M $$\mathrm{AgN}{\mathrm{O}}_3$$ solution when titrated using $${\mathrm{K}}_2\mathrm{Cr}{\mathrm{O}}_4$$ as an indicator. What is the depression in freezing point of KCl solution of the given concentration? _________ (Nearest integer).

(Given : $${\mathrm{K}}_{\mathrm{f}}=2.0\mathrm{K}\mathrm{kg}\mathrm{mo}{\mathrm{l}}^{-1}$$)

Assume 1) 100% ionization and 2) density of the aqueous solution as 1 g mL$${}^{-1}$$