Plutonium (IV) hydroxide

Plutonium hydroxide
Plutonium hydroxide
Are common
Systematic ; name	Plutonium (IV) hydroxide
Traditional names	Plutonium hydroxide
Chem. formula	Pu (OH) 4
Physical properties
condition	hydrate - a dark green or olive green amorphous precipitate
Molar mass	312.03 g / mol

Plutonium (IV) hydroxide is an inorganic compound, plutonium hydroxide with the formula Pu (OH) ₄ does not dissolve in water, forms crystalline hydrates - a dark green or olive green amorphous precipitate.

Content

Getting

The effect of aqueous solutions of ammonia or alkalis on acidic solutions of plutonium (IV) compounds:

{\mathsf {Pu(SO_{4})_{2}+4NaOH+xH_{2}O\ {\xrightarrow {}}\ Pu(OH)_{4}\cdot xH_{2}O\downarrow +2Na_{2}SO_{4}}}

{\ displaystyle {\ mathsf {Pu (SO_ {4}) _ {2} + 4NaOH + xH_ {2} O \ {\ xrightarrow {}} \ Pu (OH) _ {4} \ cdot xH_ {2} O \ downarrow + 2Na_ {2} SO_ {4}}}}

the reaction begins to go already at pH ≈ 1.

Freshly precipitated plutonium (III) hydroxide in air is rapidly oxidized to plutonium (IV):

{\mathsf {4Pu(OH)_{3}+O_{2}+2H_{2}O\ {\xrightarrow {}}\ 4Pu(OH)_{4}}}

{\ displaystyle {\ mathsf {4Pu (OH) _ {3} + O_ {2} + 2H_ {2} O \ {\ xrightarrow {}} \ 4Pu (OH) _ {4}}}}

Physical Properties

Plutonium (IV) hydroxide forms a dark green or olive green amorphous precipitate of the composition Pu (OH) ₄ • n H ₂ O. It is polymerized during long-term storage and changes color to emerald green. Air-dried sediment contains approximately 2 water molecules.

Not soluble in water, p PR = 58. Solubility increases in solutions of sodium sulfate or sodium carbonate .

Chemical Properties

Decomposes on heating:

{\mathsf {Pu(OH)_{4}\cdot xH_{2}O\ {\xrightarrow {100-400^{o}C}}\ PuO_{2}+(x+2)H_{2}O}}

{\ displaystyle {\ mathsf {Pu (OH) _ {4} \ cdot xH_ {2} O \ {\ xrightarrow {100-400 ^ {o} C}} \ PuO_ {2} + (x + 2) H_ { 2} O}}}

Reacts with acids:

{\mathsf {Pu(OH)_{4}\cdot xH_{2}O+2H_{2}SO_{4}\ {\xrightarrow {}}\ Pu(SO_{4})_{2}+(x+2)H_{2}O}}

{\ displaystyle {\ mathsf {Pu (OH) _ {4} \ cdot xH_ {2} O + 2H_ {2} SO_ {4} \ {\ xrightarrow {}} \ Pu (SO_ {4}) _ {2} + (x + 2) H_ {2} O}}}

Literature

Chemical Encyclopedia / Editorial Board: Knunyants I.L. et al. - M .: Soviet Encyclopedia, 1992. - T. 3. - 639 p. - ISBN 5-82270-039-8 .
Milyukova M.S., Gusev N.I., Sentyurin I.G. et al. Analytical chemistry of plutonium. - M .: Nauka, 1965 .-- 457 p.
The Chemistry of the Actinide and Transactinide Elements / Lester R. Morss, Norman M. Edelstein, J. Fuger. - Springer, 2010. - T. 2. - ISBN 978-94-007-0210-3 .
I.I. Zherin, G.N. Ameline. Chemistry of thorium, uranium, plutonium: a training manual. - Tomsk: Ed. TPU, 2010 .-- 147 p.

Plutonium hydroxide
Are common
Systematic name	Plutonium (IV) hydroxide
Traditional names	Plutonium hydroxide
Chem. formula	Pu (OH) ₄
Physical properties
condition	hydrate - a dark green or olive green amorphous precipitate
Molar mass	312.03 g / mol