The Application of pH-logc _i Diagrams for Graphical Estimation of the pH of Solutions and for the Derivation of Useful Simplified Equations

Abstract

For the derivation of equations which allow an approximative calculation of pH values, it is again necessary to refer to the reactions of a monobasic acid HB in water:

$$ {\rm HB} + {{{\rm H}}_2}{\rm O}\ \rightleftarrows\ {{{\rm B}}^{-}} + {{{\rm H}}_3}{{{\rm O}}^{+}} $$

$$ {{{\rm H}}_2}{\rm O} + {{{\rm H}}_2}{\rm O}\ \rightleftarrows\ {\rm O}{{{\rm H}}^{-}} + {{{\rm H}}_3}{{{\rm O}}^{+}} $$