At the triple point of water wheater the relative amounts of ice, water and vapour fixed or not. Explain.

Explanation

Ar the triple point of water, the temperature and pressure are fixed. For water, triple point temperature is 273.16K (or `0.01^(@)C` ) and triple point pressure is 0.46 cm of Hg column. However, the relative amounts of three phases at triple point of water are not unique. The relative amount of three phases can be varied by adding or taking out heat from the system.