Praseodymium(III) hydroxide
Praseodymium(III) hydroxide is an inorganic compound with a chemical formula Pr(OH)3.
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3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.036.815 |
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PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
| Pr(OH)3 | |
| Molar mass | 191.932 |
| Appearance | green solid[1] |
| Melting point | 220 °C (493 K)（dissolves）[2] |
| Virtually insoluble in water | |
Solubility product (Ksp) |
3.39×10−24[3] |
| Related compounds | |
Other anions |
Praseodymium(III) oxide |
Other cations |
Cerium(III) hydroxide Neodymium(III) hydroxide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
Production
The reaction between ammonia water and praseodymium(III) nitrate produces praseodymium(III) hydroxide:[2]
- Pr(NO3)3 + 3 NH3·H2O → Pr(OH)3↓ + 3 NH4NO3
Chemical properties
Praseodymium(III) hydroxide can react with acid and produce praseodymium salts:
- Pr(OH)3 + 3 H+ → Pr3+ + 3 H2O, for example;
Pr(OH)3 + 3CH3COOH forms Pr(CH3CO2)3 + 3H2O;
Praseodymium(III) hydroxide + Acetic acid forms praseodymium(III) acetate and water.
References
- Yi, Xianwu. Series of Inorganic Chemistry - Vol 7 (in Chinese). Science Press. pp. 168-171. (2) Hydroxides
- 《无机化合物制备手册》. 朱文祥 主编. 化学工业出版社. P98~99. 【III-103】氢氧化镨（praseodymium hydroxide）
- John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99 ed.). CRC Press. pp. 5–189. ISBN 978-1138561632.
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