Abstract The ionization constant of acetic acid and the secondary ionization constant of oxalic acid were determined by pH titration with pH sensor and drop number sensor. The experimental error and the reason why the ionization constant of medium strong acid should not be determined by this method were analyzed.
REN Feng, ZHOU Zu-Bao. Determination of Ionization Constant of Weak Acid by pH Titration[J]. Chinese Journal of Chemical Education, 2021, 42(5): 72-76.