Two solutions of non-volatile solutes ‘A’ and ‘B’ are prepared. The molar mass ratio is MA : MB = 1 : 3. Both are prepared a 5% solution by mass in water. The ratio of the freezing point depressions ΔTf(A):ΔTf (B) of the solution is
1
1 : 3
2
3 : 1
3
1 : 1
4
5 : 3
5
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