What is ice point ?
The Ice point is 0ºC. It is the temperature when ice melts or water freezes, if the pressure is 1 atmosphere. The water freezing changes with the pressure. When pressure is 1 atmosphere, water and ice are in equilibrium at 0º C. The water and vapor are in equilibrium at 100ºC. Reducing the pressure the equilibrium temperatures change. If the pressure is very low, is posible to have the three fases (vapor, water and ice) in equilibrium. The Triple point is the temperature when the three water fases can coexist, and it is equals to 0.01ºC at 0.0060373057 Atmosphere.
