<Dl> <Dd> (x) 1 (x) 2 = constant = K N (x, 12) (\ displaystyle (\ frac ((x) _ (1)) ((x) _ (2))) = (\ text (constant)) = K_ (N (x, 12))) </Dd> </Dl> <Dd> (x) 1 (x) 2 = constant = K N (x, 12) (\ displaystyle (\ frac ((x) _ (1)) ((x) _ (2))) = (\ text (constant)) = K_ (N (x, 12))) </Dd> <P> The value of constant K depends on temperature and is called partition coefficient . This equation is valid if concentrations are not too large and if the species "x" does not change its form in any of the two phases "1" or "2". If such molecule undergoes association or dissociation then this equation still describes the equilibrium between "x" in both phases, but only for the same form--concentrations of all remaining forms must be calculated by taking into account all the other equilibria . </P> <P> In the case of gas absorption, one may calculate its concentration by using, e.g., the Ideal gas law, c = p / RT . In alternative fashion, one may use partial pressures instead of concentrations . </P>

Where is the bulk of the water absorbed