Table 3. Overview of Distribution Ratios for Extraction of Co(II) or Cu(II) by 0.2 mol L–1 TOMAC in Toluene from 7.9 mmol L–1 CuCl2 or 17.0 mmol L–1 CoCl2 in LiCl or Different Di- and Trivalent Salts and the Salt Cation Standard State Gibbs Free Energy of Hydration (ΔGhyd, exp0)32.
cation | DCo(II) at 8.5 mol L–1 Cl– | DCu(II) at 5.5 mol L–1 Cl– | ΔGhyd,exp0 (kJ mol–1) | ΔGhyd,exp0/z (kJ mol–1) |
---|---|---|---|---|
Li+ | (2.1 ± 0.1) · 103 | (2.2 ± 0.1) · 102 | –475 | –475 |
Ca2+ | (4.8 ± 0.3) · 102 | (4.0 ± 0.2) · 101 | –1505 | –753 |
Mg2+ | (5.8 ± 0.3) · 102 | (3.8 ± 0.2) · 101 | –1830 | –915 |
Al3+ | (5.2 ± 0.3) · 102 | (4.1 ± 0.2) · 101 | –4525 | –1508 |