Henderson-Hasselbalchova enačba

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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:

pK_a - pH = \log_{10}\frac{[HA]}{[A^-]}

Za šibke baze (B) velja:

pK_b - pOH = \log_{10}\frac{[HB^+]}{[B]}

Literatura[uredi | uredi kodo]

  • 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.