Strong Base
A
strong base
is a
basic
chemical compound
that is able to
deprotonate
very
weak acids
in an
acid-base reaction
. The strength of a base is indicated by its
pK
b
value, compounds with a
pK
b
of less than about 1 are called strong bases. Common examples of strong bases are the
hydroxides
of
alkali metals
and
alkaline earth metals
like
NaOH
and
Ca(OH)
2
. In
water
strong bases form
hydroxyl ions
(OH
-
), either by complete dissociation through
solvation
(metal hydroxides) or by
chemical reaction
with water (e.g.
NaH
and
LDA
). Very strong bases are even able to deprotonate very weakly acidic C-H groups in the absence of water.
Common examples
Medium strong bases
Sodium hydrogen carbonate
(NaHCO
3
)
Sodium carbonate
(Na
2
CO
3
)
Strong bases
Sodium hydroxide
(NaOH)
Potassium hydroxide
(KOH)
Barium hydroxide
(Ba(OH)
2
)
Calcium hydroxide
(Ca(OH)
2
)
Lithium hydroxide
(LiOH)
Very strong bases
Sodium hydride
(NaH)
Sodium amide
(NaNH
2
)
Lithium diisopropylamide
(LDA)
See also
Acid-base reaction theories
Base
Acid
External links
(to be provided)
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