Praseodymium(III) hydroxide

Praseodymium(III) hydroxide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.036.815 Edit this at Wikidata
EC Number
  • 240-513-9
  • InChI=1S/3H2O.Pr/h3*1H2;/q;;;+3/p-3
    Key: ZLGIGTLMMBTXIY-UHFFFAOYSA-K
  • [Pr+3].[OH-].[OH-].[OH-]
Properties
Pr(OH)3
Molar mass 191.932
Appearance green solid[1]
Melting point 220 °C (493 K)（dissolves）[2]
Virtually insoluble in water
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).

Praseodymium(III) hydroxide is an inorganic compound with a chemical formula Pr(OH)3.

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

  1. ^ Yi, Xianwu. Series of Inorganic Chemistry - Vol 7 (in Chinese). Science Press. pp. 168-171. (2) Hydroxides
  2. ^ a b 《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）
  3. ^ John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99 ed.). CRC Press. pp. 5–189. ISBN 978-1138561632.