Reference Main
Bases
Ammonia
Aniline
Dimethylamine
Ethylenediamine
Hydrazine
Hydroxylamine
Methylamine
Pyridine
Trimethylamine


Periodic Table of Elements

Constants and Variables

Vapor Pressure of Water

Ionization Energies, Electron Affinities, and Electronegativities

Ionization Constants for Weak Acids at 25º C

Ionization Constants for Weak Bases at 25º C

Standard Reduction Potentials

Thermodynamic Values (A-C)

Thermodynamic Values (F-O)

Thermodynamic Values (P-Z)

Bibliography



Ionization Constants for Weak Bases at 25º C


Base
Ammonia
Formula and Ionization Equation
NH3 + H2O NH4+ + OH-
Ka
1.8 x 10-5

Aniline
C6H5NH2 + H2O C6H5NH3+ + OH-
4.0 x 10-10

Dimethylamine
(CH3)2NH + H2O (CH3)2NH2+ + OH-
7.4 x 10-4

Ethylenediamine
(CH2)2(NH2)2 + H2O (CH2)2(NH2)2H2+ + OH-
(CH2)2(NH2)2H2+ + H2O (CH2)2(NH2)2H22+ + OH-
K1 = 8.5 x 10-5
K2 = 2.7 x 10-8

Hydrazine
N2H4 + H2O N2H5+ + OH-
N2H5+ + H2O N2H62+ + OH-
K1 = 8.5 x 10-7
K2 = 8.9 x 10-16

Hydroxylamine
NH2OH + H2O NH3OH+ + OH-
6.6 x 10-9

Methylamine
CH3NH2 + H2O CH3NH3+ + OH-
5.0 x 10-4

Pyridine
C5H5N + H2O C5H5NH+ + OH-
1.5 x 10-9

Trimethylamine
(CH3)3N + H2O (CH3)3NH+ + OH-
7.4 x 10-5