Question

The depression in freezing point of $0.1\, M$ aqueous solutions of $HCl$, $CuSO_4$ and $K_2SO_4$ are in the ratio

• A. 01:01.5
• B. 1:02:03
• C. 1:01:01
• D. 2:04:03

Answer 1

Answer: (A)

01:01.5

Answer 2

$\Delta$T = iKm Thus, $\Delta$T $\propto$ i (as concentration is same for all solutions) i for HCl = 2, i for CuSO = 2, i for KSO = 3 Thus, ratio of depression in freezing point = 2 : 2 : 3 = 1 : 1 : 1.5