Table 4 Kinetic parameters calculated in the dissolution experiments of KFe3[(SO4)2 − X(CrO4)X](OH)6 in medium H3O+ and OH− for induction and conversion periods
From: A study on the dissolution rates of K-Cr(VI)-jarosites: kinetic analysis and implications
| Kinetic parameter | H3O+ | OH− | ||
|---|---|---|---|---|
| Induction | Progressive conversion | Induction | Progressive conversion | |
| E A /J mol−1 | 109,400 | 68,300 | 82,700 | 75,700 |
| n | 0.4750 °C | 1.2 | 1.1 | 1.1 |
| 1.0530 °C | ||||
| \( \frac{{bk_{0} }}{{\rho_{j} r_{0} }} \) | 8.07 × 1016 | 2.73 × 109 | 7.30 × 1016 | 8.97 × 1014 |