cerium changes its oxidation state
(Ce
3+ gives a magenta solution while
Ce
4+ gives a blue solution). The B–Z
reaction is an example of a chemical
*oscillating reaction – a reaction in
which there is a regular periodic
change in the concentration of one
or more reactants. The mechanism is
highly complicated, involving a large
number of steps. See brusselator.
B–Z reaction
90
b
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