What ‘re the colligative properties boiling point elevation and freezing point depression, and how do you calculate them? posted on November 10, 2022 When the vapor pressure of pure water is equal to standard atmospheric pressure (1 atm or 760 mm Hg) at 100 ºC pure water will boil at 100 ºC, which is its normal boiling point. However, since the …Continue Reading about What ‘re the colligative properties boiling point elevation and freezing point depression, and how do you calculate them? →