![]() See Water - Saturation pressure for calculator of equilibrium pressure at varying temperature.ĭynamic viscosity of water (liquid and vapor) as function of temperature (☌ and ☏): Vapor pressure of water as function of temperature (☌ and ☏): See also these and other properties of Water at varying temperature and pressure : Boiling points at high pressure, Boiling points at vacuum pressure, Density and specific weight, Dynamic and kinematic viscosity, Enthalpy and entropy, Heat of vaporization, Ionization Constant, pK w, of normal and heavy water, Melting points at high pressure, Prandtl number, Properties at Gas-Liquid Equilibrium Conditions, Saturation pressure, Specific gravity, Specific heat (heat capacity), Specific volume, Thermal conductivity, Thermal diffusivity and Vapour pressure at gas-liquid equilibrium. See Water and Heavy Water for thermodynamic properties at standard condtions. Tabulated values are given below the figures, in SI and Imperial units. The figures show liquid and gaseous states at equilibrium as a function of temperature, starting at the triple point and ending at the critical temperature. The figures and tables below summarize the thermophysical properties of water and steam at equilibrium. At this equilibrium condition the vapor pressure is the saturation pressure. At higher pressures water would condense. The vapor pressure of water is the pressure at which water vapor is in thermodynamic equilibrium with its condensed state. If the space is confined the partial pressure exerted by the molecules increases until the rate at which molecules reenter the liquid is equal to the rate at which they leave. Water tends to evaporate or vaporize by projecting molecules into the space above its surface.
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