Which of the following aqueous solution will have the lowest freezing point? — Solutions and Colligative Properties Chemistry Question

💡 Solution & Explanation

ΔT_f ∝ i * m. At same molality: sucrose i*m = 0.10; NiCl2 i*m = 0.30; $CuSO_4$ i*m = 0.20; $NH_4NO_3$ i*m = 0.20. NiCl2 has the highest i*m, so lowest freezing point.