Fig. 3
Evolution of the conductivity and pH, monitoring the reaction of Eq. (3) when subjected to a variation in H or Case. (a) Evolution of \(\sigma ^{\mathrm{Eq.3}}_{\text{i} }\)(H, Case) (i = 1 to 4, H = 0.0, 8.0kOe. Case = I-case, M-case). The thick blue line emphasizes the linear evolution of \(\sigma ^{\mathrm{Eq.3}}_{\text{i} }\)(H, Case, i = 1 to 4), (see text). (b) Evolution of \(\text{pH} ^{\mathrm{Eq.3}}_{\text{i} }\)(H, Case) (i = 1 to 4; H = 0.0, 8.0kOe; Case = I-case, M-case). The solid curves simulate the exponentially decaying function of Eq. (7) which starts directly after introducing \({\text{CaCl}}_{2\mathrm{(aq)}}\). (c) Evolution of the rate of \({\text{CaCl}}_{2\mathrm{(aq)}}\) addition to the circulating \(\text{NaHCO}_{\mathrm{3(aq)}}\) solution. The light-blue area highlights the onset and duration of adding \({\text{CaCl}}_{2\mathrm{(aq)}}\) till complete neutralization of \({\text{NaHCO}_3}\).
