Tableau de pKa
3
F o r m e a c i d e F o r m e b a s i q u e p K a F o r m e a c i d e F o r m e b a s i q u e p K a H C l O 4 C l O 4 - - 1 0 9 H I I - - 1 0 9 - 1 0 H C N C N - 9 . 2 - 1 0 N H 4 + N H 3 9 . 2 4 H 2 S O 4 H S O 4 - 1 0 8 - 1 1 H B r B r - - 9 1 0 H C l C l - - 7 R N H 3 + R N H 2 1 0 - 1 1 - 7 H C O 3 - C O 3 2 - 1 0 . 3 3 A r S O 3 H A r S O 3 - - 6 . 5 1 0 . 6 6 - 6 . 5 R S H R S - 1 0 - 1 1 A r O H 2 + A r O H - 6 . 4 1 1 - 6 1 1 - 5 1 1 . 6
Transcript of Tableau de pKa
Forme acide Forme basique pKa Forme acide Forme basique pKa
HClO4 ClO4- -10 9
HI I- -10 9
-10 HCN CN- 9.2
-10 NH4+ NH3 9.24
H2SO4 HSO4 -10 8-11
HBr Br - -9 10
HCl Cl- -7 RNH3+ RNH2 10-11
-7 HCO3- CO3
2- 10.33
ArSO3H ArSO3- -6.5 10.66
-6.5 RSH RS- 10-11
ArOH2+ ArOH -6.4 11
-6 11
-5 11.6
Ar3NH+ Ar3N -5 12.5
-4 13
-3.5 13.5
ROH2+ ROH -2 CH3OH CH3O- 15.2
H3O+ H2O -1.74 H2O OH- 15.74
HNO3 NO3- -1.4 16
-0.5 16
Ar2NH2+ Ar2NH 1 17
HF F- 3.17 19-20
ArNH3+ ArNH2 3-5 24.5
4-5 25
5
25
H2S HS- 7
25
8.30 31.5
33
H2 H- 35
iPr2NH iPr2N- 36
NH3 NH2- 38
RH R- 50
