properties of water

real world water cycle

    Water has many properties and is a complex and life sustaining resourse.

chemical properties of water
physical properties of water
    Property Value
    Molar mass 18.015
    Molar Volume 55.5 moles/liter
    Boiling Point (BP) 100°C at 1 atm
    Freezing point (FP) 0°C at 1 atm
    Triple point 273.16 K at 4.6 torr
    Surface Tension 73 dynes at 20°C
    Vapor pressure 0.0212 atm at 20°C
    Heat of vaporization 40.63 kJ/mol
    Heat of Fusion 6.013 kJ/mol
    Heat Capacity (cp) 4.22 kJ/kg.K
    Dielectric Constant 78.54 at 25°C
    Viscosity 1.002 centipoise at 20°C
    Density 1 g/cc
    Density maxima 4°C
    Specific heat 4180 J kg-1 K-1 ( T=293…373 K)
    Heat conductivity 0.60 W m-1 K-1 (T=293 K)
    Melting heat 3.34 x 105 J/kg
    Evaporation heat 22.6 x 105 J/kg
    Critical Temperature 647 K
    Critical pressure 22.1 x 106 Pa
    Speed of sound 1480 m/s (T=293 K)
    Relative permittivity 80 (T=298 K)
    index of refraction (relative to air)
    1.31 (ice; 589 nm; T=273 K; p=p0)
    1.34 (water; 430-490 nm; T=293 K; p=p0)
    1.33 (water; 590-690 nm; T=293 K; p=p0)

water characteristics
    Water is an essential element of life that impacts everyone in many different ways.

      • rain, snow or ice;
      • aquifer, spring, stream, river, lagoon or ocean;
      • fresh or saline;
      • potable or non-potable;
      • acidic or alkaline - pH balance;
      • gravity, pressure or tidal flow;
      • brackish or stagnant;
      • polluted or contaminated;
      • filtered, treated or conditioned.
    OneWaternaturally is focused on naturally looking after our water.