Option of the right formula in calculating the hydrogen ion concentration of a weak acid solution
(EN)
Demertzis, M. A.
(EN)
Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας
(EL)
Demertzis, M. A.
(EN)
The hydrogen ion concentration [H3O+] of any weak monoprotic acid solution can be determined by solving the exact equilibrium expression for the acid dissociation, using appropriate numerical methods. However, accurate values of [H3O+] can be calculated from convenient simplified forms of the exact expression optioned by means of a diagram of PCHA versus pK(a). The diagram drawn under predetermined conditions is separated in four distinct parts. Without exception all solutions corresponding to a particular part definitely obey an individual form in calculating their hydrogen ion concentration.
(EN)
