A value that quantitatively expresses the extent to which a substance dissociates in solution The smaller the value of K, the less dissociation of the species in solution This value varies with temperature, ionic strength, and the nature of the solvent
A value which quantitatively expresses the extent to which a substance dissociates in solution The smaller the value of K, the less dissociation of the species in solution This value varies with temperature, ionic strength, and the nature of the solvent
For systems in which °ligands of a particular kind bind to a °receptor in a solvent there will be a characteristic frequency with which existing ligand-receptor complexes dissociate as a result of thermal excitation, and a characteristic frequency with which empty receptors bind ligands as a result of Brownian encounters, forming new complexes The frequency of binding is proportional to the concentration of the ligand in solution The dissociation constant is the magnitude of the ligand concentration at which the probability that the receptor will be found occupied is 1/2
Equilibrium constant that applies to the dissociation of a comples ion into a simple ion and coordinating species (ligands)
the equilibrium constant for the decomposition of a complex ion into its components in solution
the inverse of the formation constant, which is the equilibrium constant for the reaction in which ligands replace water molecules in binding to a complex ion So if the dissociation constant is high, the formation constant is low and fewer ligands are binding with metal ions