We wish to lower the freezing point of the water in an automobile radiator to -40 C. The total mass of water present is 12.0kg. For which one for the following compounds would we have to use the greatest mass of solute to achieve this? You may assume Kf for water= -1.86 C/m and that all ionizable solutes are completely ionized with unit activity.
C3H6(OH)2 AIF3 NaCl C2H5OH CaCl2