Simplified Equation for Ampholytes

An ampholyte reacts in solution both as acid and as base. The following protolysis equilibria are established in water [Pg.62]

Equation 137 is based on the following consideration The reaction Eqs. (133), (134), and (2) produce cations, here only H3O+, and the anions andOH , and anions are neutralized by the formation of H2B. By consuming the anions HB , reaction equation (134) forms as many uncharged molecules H2B as it has consumed HB . From this follows [Pg.63]

For an uncharged ampholyte FIB the following equilibria have to be formulated [Pg.63]

1 An Ampholyte That Is Strongly Acidic and Weakly Basic [Pg.63]

Comparing the concentrations of H2B and H30 in the entire pH range from 0 to 14 reveals that the concentration of H2B is always much smaller than that of HsO, and thus one can simplify the charge balance [Pg.64]

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