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Which one of the following solutions in water will have the h | physicswallah27

Which one of the following solutions in water will have the
highest freezing point?
Anonymous Quiz
28%
(a) Solution which is 0.1 M in KN03 and 0.2 M in Ba(NO3)2
29%
(b) Solution which is 0.1 M in and 0.1 M Ba(NO3)2
27%
(c) Solution which is 0.2 M in urea and 0.2 M glucose.
15%
(d) Solution which is 0.1 M both in Al2(SO4)3 and 0.1 M K2S04