Pka Chart: Conjugate Acids & Conjugate Bases Page 2
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1
23
4
conjugate acid
conjugate base
conjugate acid
conjugate base
O
15.7
water
O
O
O
O
O
H
H
H
1,3-diketones
9
(hydroxide)
H
16
primary alcohols
9.1
hydrogen cyanide
O
O
H
C
N
C
N
(cyanide)
(alkoxides)
H
N H
9.4
ammonium ions
tertiary alcohols
H
N
H
18
H
O
O
H
H
H
(tert-butoxide)
O
O
O
OH
ketones
18-21
10
phenols
(enolates)
O
O
-
-2
bicarbonate
HCO
CO
10.25
esters
25
3
3
O
O
(ester enolates)
H
10.5
26
thiols
alkynes
C
C
H
C
C
S
S
(acetylide anions)
H
H
protonated
H
10.6
hydrogen
H
C
N
H
35
H
H
amines
N
3
(hydride)
one way only
H
C
H
H
3
H
H
N
cyclopentadiene
ammonia/amines
N
15
36
H
R
H
R
H
H
(amide bases)
(aromatic)
O
O
alkanes
amides
~60
15
NH
one way only
NH
H
MgBr
2
(Grignards/ organolithium reagents)
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