Vapor pressures of aqueous solutions of ethylene glycol are measured in the range of temperature from -10 to 60°C and concentration from 20 to 50wt%. Chemistry Phases of Matter Vapor Pressure and … While, the second effect unit evaporator evaporates the vapor ethylene oxide and water which are not evaporate in EVA-01 and send to waste treatment system via S-15. In a 50% solution with operational … … Ethylene oxide reacts with water to produce ethylene glycol according to the chemical equation: C 2 H 4 O + H 2 O --> HO–CH 2 CH 2 –OH. Glycol When a non-volatile solute is added to the solvent, there is a decrease in vapour pressure and it becomes equal to that of solid solvent at a lower temperature then the freezing point of solvent … 20°C and 1 atmosphere pressure. ETHYLENE GLYCOL Ethylene or propylene glycol, to depress the freeze point of the fluid. vapour pressure of the liquid becomes equal to the atmospheric pressure. Calculate the vapor pressure of water over each of the following ethylene glycol (C2H6O2) solutions at 22 ℃ (vp pure water = 19.83 mmHg). Ethylene Glycol Water freezes at temperatures much less than 0 degree Celsius when ethylene glycol is added to it. Water, to provide heat transfer. Also the presences of 5% methanol decreases the freezing temperature for all values of ethylene glycol percents, while it cause little increase in the boiling …