Page 95 - Instant notes
P. 95
Further acids and bases 81
which is the multiproton conjugate base dissociation reaction for carbonic acid, the single
proton reactions are:
and
As with polyprotic acids, K b=K b1K b2 or, more generally, , and the K bx
values are usually sufficiently widely separated that they can be considered as a series of
distinct single proton reactions, with:
where and a B are the activities of the conjugate acid and base respectively in the xth
base dissociation equilibrium. This also means that K axK bx=K w for the xth single proton
dissociation equilibrium.
