Ochem 1 pKa values

H
Electronegativity
2.1
Li
Electronegativity
1.0
B
Electronegativity
2.0
C
Electronegativity
2.5
N
Electronegativity
3.0
O
Electronegativity
3.5
F
Electronegativity
4.0
Cl
Electronegativity
3.0
Br
Electronegativity
2.8
I
Electronegativity
2.5

HI, HCl, HNO3, H3PO4, H2SO4

pKa Value Range

pKa -10 to -5

Super strong acids

H3O+

pKa Value

pKa -1.7

RCO2H

pKa Value

pKa ?5

PhOH

pKa Value

pKa?10

H2O, ROH

pKa Value

pKa~16

RCCH (alkynes)

pKa Value

pKa~26

RNH2

pKa Value

pKa~36

Extremely weak

RCH3

pKa Value

pKa~60

Not acidic at all

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