Henderson-Hasselbalchova enačba
Henderson-Hasselbalchova enáčba [hénderson háselbalhova ~] podaja zvezo med razmerjem deležev protolizirane in neprotolizirane šibke kisline ali baze ter razliko med pH in konstanto kisline (pKa ) oziroma konstanto baze (pKb ).
Za šibke kisline (HA) velja:
![{\displaystyle pK_{a}-pH=\log _{10}{\frac {[HA]}{[A^{-}]}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/fa8bedd2eac319e36e8639537a57f53c7a728cd4)
Za šibke baze (B) velja:
![{\displaystyle pK_{b}-pOH=\log _{10}{\frac {[HB^{+}]}{[B]}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/5c101e08773a83ca1c963a75bda44cda0e6020ba)
Literatura uredi
- Lawrence J. Henderson. Concerning the relationship between the strength of acids and their capacity to preserve neutrality. Am. J. Physiol. 1908, 21, 173-179. (COBISS)
- Hasselbalch, K. A. Biochemische Zeitschrift 1916, 78, 112-144.
- Po, Henry N.; Senozan, N. M. Henderson-Hasselbalch Equation: Its History and Limitations. J. Chem. Educ. 2001, 78, 1499-1503. (COBISS)
- de Levie, Robert. The Henderson-Hasselbalch Equation: Its History and Limitations. J. Chem. Educ. 2003, 80, 146.
