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Ochem 1 pKa values
top pKa values that should be memorized
18
Chemistry
Undergraduate 2
05/23/2013
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Term
H
Electronegativity
 Definition
2.1
Term
Li
Electronegativity
 Definition
1.0
Term
B
Electronegativity
 Definition
2.0
Term
C
Electronegativity
 Definition
2.5
Term
N
Electronegativity
 Definition
3.0
Term
O
Electronegativity
 Definition
3.5
Term
F
Electronegativity
 Definition
4.0
Term
Cl
Electronegativity
 Definition
3.0
Term
Br
Electronegativity
 Definition
2.8
Term
I
Electronegativity
 Definition
2.5
Term

HI, HCl, HNO3, H3PO4, H2SO4

pKa Value Range

 Definition

pKa -10 to -5

Super strong acids
Term

H3O+

pKa Value

 Definition
pKa -1.7
Term

RCO2H

pKa Value

 Definition
pKa ≈5
Term

PhOH

pKa Value

 Definition
pKa≈10
Term

H2O, ROH

pKa Value

 Definition
pKa~16
Term

RCCH (alkynes)

pKa Value

 Definition
pKa~26
Term

RNH2

pKa Value

 Definition

pKa~36

Extremely weak
Term

RCH3

pKa Value

 Definition

pKa~60

Not acidic at all
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