ABSTRACT
H2L± = H+ + HL-2.48 16.7 HL-= H+ + L2-6.844 12.23 –144
2-Amino-2-methyl-1,3-propanediol HL+ = H+ + L, (L = C4H11NO2) 8.801 49.85 –44 2-Amino-2-methyl-1-propanol HL+ = H+ + L, (L = C4H11NO) 9.694 54.05 ≈–21 3-Amino-1-propanesulfonic acid HL = H+ + L-, (HL = C3H9NO3S) 10.2 Ammonia NH +4 = H+ + NH3 9.245 51.95 8 AMPSO HL± = H+ + L-, (HL = C7H17NO5S) 9.138 43.19 –61 Arsenate H3AsO4 = H+ + H2AsO-4 2.31 –7.8
H2AsO-4 = H+ + HAsO2-7.05 1.7 HAsO2-4 = H+ + AsO3-11.9 15.9
Barbital H2L = H+ + HL-, (H2L = C8H12N2O3) 7.980 24.27 –135 HL-= H+ + L2-12.8
BES HL± = H+ + L-, (HL = C6H15NO5S) 7.187 24.25 –2 Bicine H2L+ = H+ + HL±, (HL = C6H13NO4) 2.0
HL± = H+ + L-8.334 26.34 0 Bis-tris H3L+ =H+ + H2L±, (H2L= C8H19NO5) 6.484 28.4 27 Bis-tris propane H2L2+ = H+ + HL+, (L = C11H26N2O6) 6.65
HL+ = H+ + L 9.10 Borate H3BO3 = H+ + H2BO-–3 9.237 13.8 ≈–240 Cacodylate H2L+ = H+ + HL, (HL = C2H6AsO2) 1.78 –3.5
HL = H+ + L-6.28 –3.0 –86 CAPS HL± = H+ + L-, (HL = C9H19NO3S) 10.499 48.1 57 CAPSO HL± = H+ + L-, (HL = C9H19NO4S) 9.825 46.67 21 Carbonate H2CO3 = H+ + HCO-–3 6.351 9.15 –371
HCO-3 = H+ + CO2-10.329 14.70 –249 CHES HL± = H+ + L-, (HL = C8H17NO3S) 9.394 39.55 9
References 1. Goldberg, R. N., Kishore, N., and Lennen, R. M., “Thermodynamic
Quantities for the Ionization Reactions of Buffers,” J. Phys. Chem. Ref. Data, 31, 231, 2002.
