Gold Oxide (I)

Gold oxide
Gold oxide
Are common
Systematic ; name	Gold Oxide (I)
Traditional names	Gold oxide gold oxide
Chem. formula	Au 2 O
Physical properties
condition	purple powder; blue hydrosol
Molar mass	409.94 g / mol
Thermal properties
T.	225 ° C
Classification
Chemspider

Gold oxide (I) is a binary inorganic compound of a gold metal and oxygen with the formula Au ₂ O. Under standard conditions, it is an unstable purple powder or blue hydrosol.

Getting

The interaction of gold (I) chloride with potassium hydroxide when heated:

{\mathsf {2AuCl+2KOH\ {\xrightarrow {t}}\ Au_{2}O\downarrow +2KCl+H_{2}O}}

{\ displaystyle {\ mathsf {2AuCl + 2KOH \ {\ xrightarrow {t}} \ Au_ {2} O \ downarrow + 2KCl + H_ {2} O}}}

{\mathsf {2AuCl+2KOH\ {\xrightarrow {t}}\ Au_{2}O\downarrow +2KCl+H_{2}O}}

Boiling potassium dibromoaurate or gold (III) chloride dimer with potassium hydroxide:

{\mathsf {2K[AuBr_{2}]+2KOH\ {\xrightarrow {t}}\ Au_{2}O\downarrow +4KBr+H_{2}O}}

{\ displaystyle {\ mathsf {2K [AuBr_ {2}] + 2KOH \ {\ xrightarrow {t}} \ Au_ {2} O \ downarrow + 4KBr + H_ {2} O}}}

{\mathsf {2K[AuBr_{2}]+2KOH\ {\xrightarrow {t}}\ Au_{2}O\downarrow +4KBr+H_{2}O}}

{\mathsf {Au_{2}Cl_{6}+6KOH\ {\xrightarrow {t}}\ Au_{2}O\downarrow +6KCl+3H_{2}O+O_{2}\uparrow }}

{\ displaystyle {\ mathsf {Au_ {2} Cl_ {6} + 6KOH \ {\ xrightarrow {t}} \ Au_ {2} O \ downarrow + 6KCl + 3H_ {2} O + O_ {2} \ uparrow}} }

{\mathsf {Au_{2}Cl_{6}+6KOH\ {\xrightarrow {t}}\ Au_{2}O\downarrow +6KCl+3H_{2}O+O_{2}\uparrow }}

The effect of mercury (I) nitrate dihydrate on a solution of gold (III) chloride dimer:

{\mathsf {Au_{2}Cl_{6}+2Hg_{2}(NO_{3})_{2}\cdot 2H_{2}O\ {\xrightarrow {-3H_{2}O}}\ Au_{2}O\downarrow +2HgCl_{2}+2Hg(NO_{3})_{2}+2HCl}}

{\ displaystyle {\ mathsf {Au_ {2} Cl_ {6} + 2Hg_ {2} (NO_ {3}) _ {2} \ cdot 2H_ {2} O \ {\ xrightarrow {-3H_ {2} O}} \ Au_ {2} O \ downarrow + 2HgCl_ {2} + 2Hg (NO_ {3}) _ {2} + 2HCl}}}

{\mathsf {Au_{2}Cl_{6}+2Hg_{2}(NO_{3})_{2}\cdot 2H_{2}O\ {\xrightarrow {-3H_{2}O}}\ Au_{2}O\downarrow +2HgCl_{2}+2Hg(NO_{3})_{2}+2HCl}}

Physical Properties

Gold (I) oxide forms an unstable purple powder or blue hydrosol. The compound is easily disproportionate when heated, so it can be considered as a mixture of Au and Au ₂ O ₃ .

Chemical Properties

Easily decomposes on heating:

{\mathsf {3Au_{2}O\ {\xrightarrow {225^{o}C}}\ 4Au+Au_{2}O_{3}}}

{\ displaystyle {\ mathsf {3Au_ {2} O \ {\ xrightarrow {225 ^ {o} C}} \ 4Au + Au_ {2} O_ {3}}}}

{\mathsf {3Au_{2}O\ {\xrightarrow {225^{o}C}}\ 4Au+Au_{2}O_{3}}}

Interacts with conc. hydrochloric acid solution:

3Au 2 O + 8HCl → 2H [Au (Cl) 4] + 4 Au ↓ + 3H 2 O

When interacting with a concentrated solution of ammonium hydroxide, a substance of the composition Au ₃ N · NH ₃ , a black precipitate, is obtained. It is unstable in hot water and explodes on impact. There is also a compound of the composition 3Au ₂ O · 4NH ₃ . It has a black color and is also unstable in water and when heated.

Literature

Ripan R., Chetyanu I. Inorganic chemistry. Chemistry of metals. - M .: Mir, 1972. - T. 2. - 871 p.
Chemical Encyclopedia / Redkol .: Knunyants I.L. et al. - M .: Soviet Encyclopedia, 1992. - T. 3. - 639 p. - ISBN 5-82270-039-8 .
Chemist Handbook / Redkol .: Nikolsky B.P. et al. - 2nd ed., Rev. - M.-L.: Chemistry, 1966. - T. 1. - 1072 p.
Chemist Handbook / Redkol .: Nikolsky B.P. et al. - 3rd ed., Rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.

Gold oxide
Are common
Systematic name	Gold Oxide (I)
Traditional names	Gold oxide gold oxide
Chem. formula	Au ₂ O
Physical properties
condition	purple powder; blue hydrosol
Molar mass	409.94 g / mol
Thermal properties
T.	225 ° C
Classification
Chemspider

Gold Oxide (I)

Getting

Physical Properties

Chemical Properties

Literature

More articles: