Table 3.
Solubility constants for Pu(OH)3(s) and Pu3+ hydrolysis constants
| Reaction | log K0 or βn0 | Reference |
|---|---|---|
| Pu(OH)3(s) + 3 H+ ⇌ Pu3+ + 3 H2O | 15.8 ± 0.8 | Felmy et al. (1989) |
| Pu(OH)3(s)a + 3 H+ ⇌ Pu3+ + 3 H2O | 15.8 ± 1.5 | NEA-TDB: Lemire et al. (2001), Guillaumont et al. (2003) |
| Pu3+ + H2O ⇌ PuOH2+ + H+ | −6.9 ± 0.3 | |
| Pu(OH)3(am) + 3 H+ ⇌ Pu3+ + 3 H2O | 14.58 ± 0.5 | Cho et al. (2016): from solubility and spectroscopic data |
| Pu3+ + H2O ⇌ PuOH2+ + H+ | −6.18 ± 0.25 | |
| Pu(OH)3(s) + 3 H+ ⇌ Pu3+ + 3 H2O | 15.1 | Cho et al. (2016): Felmy et al. (1989) solubility data used with NEA-TDB log β10 to recalculate log Ks,0 |
| Pu3+ + H2O ⇌ PuOH2+ + H+ | −6.9 | |
| Pu(OH)3(s) + 3 H+ ⇌ Pu3+ + 3 H2O | 14.5 | Cho et al. (2016): Felmy et al. (1989) solubility data used with Cho et al. (2016) log β10 to recalculate log Ks,0 |
| Pu3+ + H2O ⇌ PuOH2+ + H+ | −6.18 ± 0.25 | |
| Pu(OH)3(s)a + 3 H+ ⇌ Pu3+ + 3 H2O | 15.8 ± 1.5 | ThermoChimie: solubility and first hydrolysis constant from NEA-TDB, second and third hydrolysis constants from Allard et al. (1980) |
| Pu3+ + H2O ⇌ PuOH2+ + H+ | −6.9 ± 0.3 | |
| Pu3+ + 2 H2O ⇌ Pu(OH)2+ + 2 H+ | −15.9 | |
| Pu3+ + 3 H2O ⇌ Pu(OH)30 + 3 H+ | −25.3 | |
| Pu(OH)3(s)a + 3 H+ ⇌ Pu3+ + 3 H2O | 15.8 ± 1.5 | Tasi et al. (2018a) solubility and first hydrolysis constant from NEA-TDB, second and third hydrolysis constants from Neck et al. (2007) by analogy with NEA-TDB hydrolysis constants for Am3+ |
| Pu3+ + H2O ⇌ PuOH2+ + H+ | −6.9 ± 0.3 | |
| Pu3+ + 2 H2O ⇌ Pu(OH)2+ + 2 H+ | −15.1 ± 0.7 | |
| Pu3+ + 3 H2O ⇌ Pu(OH)30 + 3 H+ | −26.2 ± 0.5 |
a –
Pu(OH)3(s) designated as solid (s) because crystallinity was undetermined in Felmy et al. (1989) study, designated as crystalline (cr) in NEA-TDB compilations