Answer
Glucose & CaCl2
Work Step by Step
Freezing point depression and boiling point elevation depend solely on the amount of solute.
For the first problem, CH3OH has a molecular weight of 32, so 60g is 1.875 moles. Similarly, 120g of CH3CH2OH is equivalent to 2.61 moles. Since the second solution has twice the amount of solvent but less than twice the amount of solute, compared to the first solution, its freezing point is not as depressed. Therefore, the CH3OH solution will have the lower freezing point.
Do the same for the second one. 10g of CH3CH2OH is 0.217 moles. 10g of H2O is 0.556 moles. There is more H2O compared to CH3CH2OH, so the H2O in CH3OH solution will have the lower freezing point
