Physical Chemistry Chapter 7 Difference between triple point and freezing point vapor Air and vapo P=611Pa P=101.325kPa t=0.01℃ 冰 t=0℃ Pure water Air-saturated water Triple point reezing point In a sealed vessel In an open vessel (a)Triple point of H2O (b) Freezing point of H2o17 Pure water vapor P=611Pa ice t=0.01℃ Triple point In a sealed vessel (a) Triple point of H2O Air and vapor P=101..325 kPa 冰 Air-saturated water t=0℃ Freezing point In an open vessel (b) Freezing point of H2O Difference between triple point and freezing point Physical Chemistry Chapter 7