MHT CET 2024 Chemistry question

Calculate van't Hoff factor of 0.15 m solution of electrolyte if it freezes at -0.5K

(A)1.12
(B)1.25
(C)1.45
(D)1.79Correct

Answer: (D)

Solution

Depression in freezing point . The solution freezes at −0.5 (i.e. 0.5 degrees below the freezing point of pure water, taken as 0), so K. \dfrac{Δ T_f}{K_f m}$ =

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Question ID VK-099848