Question

A common antifreeze for car radiators is ethylene glycol, CH2(OH)CH2(OH). How many liters of ethylene glycol would you add to 5.6 L of water in the radiator if the coldest day in winter is -12°C? How much will the amount of ethylene glycol you calculated elevate the boiling point of the fluid in the radiator? Kf for water is 1.86 mol-1 kg and Kb is 0.51 K mol-1 kg. Assume a water density of 1 kg/L, a density of ethylene glycol of 1.11 g cm-3 and ethylene glycol boiling point of 470 K.