56) Calculate the freezing point of an aqueous solution that is 3.5% KCI (by mass) Assume complete dissociation of KCL (Kj - 1.86 deg C m^-1. Assume Van't Hoff factor for KCI)

a) 1.81 deg C

b) +0.905 deg C

c) -1.81 deg C

d) -0.905 deg C

e) none of the above

55) Calculate the freezing point of a solution that consists of 10.5 g FeCl3 in 1.50 x 10^2 g of water. Assume complete dissociation of FeCl. (Kf = 1.86deg C m^-1; Assume ideal Van't Hoff factor for FeCl3)

a) -0.818 deg C

b) -1.86deg C

c) -3.27 deg C

d) -4.91 deg C

e) none of the above