3.00 g of KCl is dissolved in 500.0 g of water to make an aqueous solution at 303 K. a. What is the concentration of KCl in ppm? b. What is the freezing point of this solution if 2.00 L of 0.100 M KCl (ρ = 1.05 g/mL) is added? The cryoscopic constant for water is 1.86 °C·kg/mol. Assume ideal behavior of the ions.

c. What is the vapor pressure in torr of the solution described in (b) at 303 K? You will need to look up the vapor pressure of water at this temperature.