Pressure of the equilibrium is given in the second column in k Pa. Where P is equilibrium vapor pressure in k Pa, and T is temperature in kelvins.įor T = 273 K to 333 K: A = 7.2326 B = 1750.286 C = 38.1.įor T = 333 K to 423 K: A = 7.0917 B = 1668.21 C = 45.1.ĭata in the table above is given for water–steam equilibria at various temperatures over the entire temperature range at which liquid water can exist. Vapor pressure formula for steam in equilibrium with liquid water: log 10 ⁡ P = A − B T − C, The values below 0 ☌ refer to supercooled water.Įlectrical conductivity of highly purified water at saturation pressure Temperature, ☌ Liquid physical properties Temperature dependence of the surface tension of pure water Temperature dependence of the density of ice and water Velocity of sound in water Thermodynamic properties Phase behaviorħ5.97 J/(mol K) and 4.2176 J/(g

Structure and properties Structure and propertiesĤ92.215 kJ/mol O–H bond dissociation energy

This page provides supplementary data to the article properties of water.įurther comprehensive authoritative data can be found at the NIST Webbook page on thermophysical properties of fluids.

Absolute entropy of water