Silver hydroxide

Silver hydroxide
Silver hydroxide
General
Systematic ; name	Silver hydroxide
Traditional names	Silver hydroxide
Chem. formula	Agoh
Rat formula	Agoh
Physical properties
condition	white amorphous precipitate
Molar mass	124.88 g / mol
Thermal properties
Enthalpy of Education	-124.36 kJ / mol
Classification
Reg. CAS number
PubChem
Smiles
Inchi
ChemSpider

Silver hydroxide is an inorganic compound, silver hydroxide with the formula AgOH, a white amorphous precipitate, decomposes in water. It shows amphoteric properties. The substance is unstable, and when it is obtained in an aqueous medium, it is hydrolyzed by water to silver oxide (I) using exchange reactions. However, in anhydrous methanol or ethanol, silver hydroxide is stable.

Sometimes silver hydroxide means a mixture of oxide with water: ½Ag ₂ O + ½H ₂ O ^[1]

Content

1 Receiving
2 Chemical properties
3 notes
4 Literature

Getting

The reaction in anhydrous ethanol of silver (I) nitrate and potassium hydroxide :

{\mathsf {AgNO_{3}+KOH\ {\xrightarrow {-45^{o}C}}\ AgOH\downarrow +KNO_{3}}}

{\ displaystyle {\ mathsf {AgNO_ {3} + KOH \ {\ xrightarrow {-45 ^ {o} C}} \ AgOH \ downarrow + KNO_ {3}}}}

Gentle addition of ammonia solution to silver (I) salt solution:

{\mathsf {AgNO_{3}+NH_{3}\cdot H_{2}O\ {\xrightarrow {}}\ AgOH\downarrow +NH_{4}NO_{3}}}

{\ displaystyle {\ mathsf {AgNO_ {3} + NH_ {3} \ cdot H_ {2} O \ {\ xrightarrow {}} \ AgOH \ downarrow + NH_ {4} NO_ {3}}}}

Chemical Properties

It decomposes in water ^[2] :

{\mathsf {2AgOH\ {\xrightarrow {}}\ Ag_{2}O+H_{2}O}}

{\ displaystyle {\ mathsf {2AgOH \ {\ xrightarrow {}} \ Ag_ {2} O + H_ {2} O}}}

It shows amphoteric properties ^[3] :

reacts with acid oxides, for example, absorbs carbon dioxide :

{\mathsf {2AgOH+CO_{2}\ {\xrightarrow {}}\ Ag_{2}CO_{3}+H_{2}O}}

{\ displaystyle {\ mathsf {2AgOH + CO_ {2} \ {\ xrightarrow {}} \ Ag_ {2} CO_ {3} + H_ {2} O}}}

reacts with ammonia to form an ammonia complex :

{\mathsf {AgOH+2NH_{3}\ {\xrightarrow {}}\ [Ag(NH_{3})_{2}]OH}}

{\ displaystyle {\ mathsf {AgOH + 2NH_ {3} \ {\ xrightarrow {}} \ [Ag (NH_ {3}) _ {2}] OH}}}

reacts with sulfides of alkali metals with the formation of arginates Ag ₂ O • 3Na ₂ O and Ag ₂ O • 2Na ₂ O

Notes

↑ Charlo G.N. Methods of analytical chemistry - quantitative analysis of inorganic compounds. - M: Chemistry, 1965 .-- S. 61.
↑ Inorganic Chemistry: in 3 vols. / Ed. Yu.D. Tretyakova T. 3. Kn.2 - M .: Publishing center "Academy", 2007. - P.195 - ISBN 5-7695-2533-9
↑ Ripan R., Chetyan I. Inorganic chemistry. Chemistry of metals. - M .: Mir, 1972. - T. 2. - S.735

Literature

Chemical Encyclopedia / Editorial Board: Knunyants I.L. et al. - M .: Soviet Encyclopedia, 1995. - T. 4. - 639 p. - ISBN 5-82270-092-4 .
Ripan R., Chetyanu I. Inorganic chemistry. Chemistry of metals. - M .: Mir, 1972. - T. 2. - 871 p.
Semishin V.I. Workshop on general chemistry. - 1960.- S. 178.- 349 p.
Pyatnitsky I.V. Analytical chemistry of silver. - M: Nauka, 1975 .-- S. 14 .-- 265 p.
Charlo G.N. Methods of analytical chemistry - quantitative analysis of inorganic compounds. - M: Chemistry, 1965. - S. 61. - 976 p.

[1] Charlo G.N. Methods of analytical chemistry - quantitative analysis of inorganic compounds. - M: Chemistry, 1965 .-- S. 61.

[2] Inorganic Chemistry: in 3 vols. / Ed. Yu.D. Tretyakova T. 3. Kn.2 - M .: Publishing center "Academy", 2007. - P.195 - ISBN 5-7695-2533-9

[3] Ripan R., Chetyan I. Inorganic chemistry. Chemistry of metals. - M .: Mir, 1972. - T. 2. - S.735