It is found that a saturated solution of sodium chloride in water boils under atmospheric pressure at 109C. Under an absolute pressure of 25.4 kPa, water boils at 65.6C and saturated sodium chloride at 73.3C. From these, draw a Duhring plot for saturated salt solution. Knowing the vapor pressure/temperature relationship for water from Fig. 7.2, find the boiling temperature of saturated salt solution under a total pressure of 33.3kPa.