(13) Calculate the freezing point of a solution containing 5.0 grams of KCl and 550.0 grams of water. The molal-freezing-point-depression constant (Kf) for water is 1.86°C/m. A) -0.45 OC B) +0.45 °C C) -0.23 OC D) +0.23 °C E) 1.23 oC

If a 1-molal solution of NaCl in water shows a freezing-point depression of 2.5˚C, what is the freezing-point depression, in degrees Celsius, observed for a 1-molal solution of CaCl in water? (Recall that both NaCl and CaCl are completely dissociated in aqueous solution.)

What is the freezing point, in °C, of a solution made with 1.07 mol of CHCl₃ in 530.0 g of CCl₄ (Kf = 29.8 °C/m, normal freezing point, Tf = -22.9 °C)?

Calculate the vapor pressure at 85.0°C of a solution prepared by dissolving 0.400 mol of liquid dibromoethane (C2H4Br2, P° = 127 torr) in 1.80 mol of liquid dibromopropane (C3H6Br2, P° = 173 torr).

What is the freezing point, in °C, of a solution made with 1.19 mol of CHCl₃ in 530.0 g of CCl₄ (Kf = 29.8 °C/m, normal freezing point, Tf = -22.9 °C)?

Calculate the vapor pressure at 85.0°C of a solution prepared by dissolving 0.250 mol of liquid dibromoethane (C2H4Br2, P° = 127 torr) in 1.80 mol of liquid dibromopropane (C3H6Br2, P° = 173 torr).