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sci.Henry-law-air-water-partition Calculator
Calculates the air-water partition coefficient Kaw and predicts contaminant distribution between dissolved and vapour phases using Henry's law. Kaw > 10⁻³ indicates significant volatilisation — benzene (Kaw = 0.22) volatilises readily from water; chlordane (Kaw = 0.065) partitions more into sediment.
Inputs
Kh Atm L Mol
Reference formula or conversion factor shown for context.
C Water Mg L
Amount of solute per unit volume. Higher concentration = more solute dissolved.
Mw G Mol
Mass of one mole of the substance (g/mol). Found by summing atomic weights. Converts between grams and moles.
T C
Thermal state of the substance. Check whether the formula needs Celsius, Fahrenheit, or Kelvin (K = °C + 273.15).
Results
partial pressure in air (Pa)
Sample size or count used in the calculation.
dimensionless Kaw
Sample size or count used in the calculation.
air-phase concentration (μg/m³)
The proportional relationship between two quantities.
KH = p/C (atm·L/mol)
The value at the specified point or condition.
volatility class
The classification assigned based on the computed value.