<Dl> <Dd> K c o n d = (Total Fe bound to EDTA) (Total Fe not bound to EDTA) × (Total EDTA not bound to Fe) (\ displaystyle K_ (\ mathrm (cond)) = (\ frac (((\ mbox (Total Fe bound to EDTA)))) (((\ mbox (Total Fe not bound to EDTA))) \ times ((\ mbox (Total EDTA not bound to Fe)))))) </Dd> </Dl> <Dd> K c o n d = (Total Fe bound to EDTA) (Total Fe not bound to EDTA) × (Total EDTA not bound to Fe) (\ displaystyle K_ (\ mathrm (cond)) = (\ frac (((\ mbox (Total Fe bound to EDTA)))) (((\ mbox (Total Fe not bound to EDTA))) \ times ((\ mbox (Total EDTA not bound to Fe)))))) </Dd> <P> This conditional constant will vary with pH . It has a maximum at a certain pH . That is the pH where the ligand sequesters the metal most effectively . </P> <P> In biochemistry equilibrium constants are often measured at a pH fixed by means of a buffer solution . Such constants are, by definition, conditional and different values may be obtained when using different buffers . </P>

Variation of equilibrium constant with temperature and pressure