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Additional
Hydroxide
English Wikipedia - The Free Encyclopedia
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Hydroxide
Hydroxide
is a
diatomic anion
with
chemical formula
OH
-
. It consists of an
oxygen
and
hydrogen
atom
held together by a
covalent bond
, and carries a negative
electric charge
. It is an important but usually
minor constituent of water
. It functions as a
base
, a
ligand
, a
nucleophile
and a
catalyst
. The hydroxide ion forms salts, some of which
dissociate
in aqueous solution, liberating solvated hydroxide ions.
Sodium hydroxide
is a multi-million-ton per annum
commodity chemical
. A hydroxide attached to a strongly
electropositive
center may itself ionize, liberating a
hydrogen cation
(H
+
), making the parent compound an acid.
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