SolutionHard

Question

Which of the following has been arranged in order of decreasing freezing point?

Options

A.0.05 MKNO3 > 0.04 M CaCl2 > 0.140 M sugar > 0.075 M CuSO4
B.0.04 M BaCl2 > 0.140 M sucrose > 0.075 M CuSO4 > 0.05 M KNO3
C.0.075 M CuSO4 > 0.140 M sucrose > 0.04 M BaCl2 > 0.05 M KNO3
D.0.075 M CuSO4 > 0.05 M NaNO3 > 0.140 M sucrose > 0.04 M BaCl2

Solution

Higher freezing point  ⇒  lesser ᐃTf  ⇒    lesser molality  ⇒   lesser number of particles

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