See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

For a given aqueous solution ' b b T K molality    ' f f T K molality     ' 2 b b b f ' 2 f v f f T K RT 1000 T 1000 K RT        2 2 b b f f r v T T T T         Tb = 100 + 273 = 373 K Tf = 0 + 273 = 273 K 1 f 80 cal g   ; 1 v 540 cal g    f