Silver dichromate

Silver dichromate
Silver dichromate
Are common
Systematic ; name	Silver dichromate
Traditional names	Silver dichromate, silver dichromate
Chem. formula	Ag 2 Cr 2 O 7
Physical properties
condition	brown red crystals
Molar mass	431.73 g / mol
Density	4.770 g / cm³
Chemical properties
Solubility in water	0.0083 15 g / 100 ml
Classification
Reg. CAS number
PubChem
Reg. EINECS number
Smiles

Silver dichromate ( silver dichromate, silver dichromate ) is an inorganic compound, a metal salt of silver and chromic acid with the formula Ag ₂ Cr ₂ O ₇ , brown-red crystals, insoluble in water. The solution has a red color.

Content

Getting

Exchange reaction with soluble silver salt:

{\mathsf {K_{2}Cr_{2}O_{7}+2AgNO_{3}\ {\xrightarrow {}}\ Ag_{2}Cr_{2}O_{7}\downarrow +2KNO_{3}}}

{\ displaystyle {\ mathsf {K_ {2} Cr_ {2} O_ {7} + 2AgNO_ {3} \ {\ xrightarrow {}} \ Ag_ {2} Cr_ {2} O_ {7} \ downarrow + 2KNO_ {3 }}}}

Physical Properties

Silver dichromate forms brown-red crystals.

Slightly soluble in water.

Chemical Properties

It decomposes in hot water:

{\mathsf {Ag_{2}Cr_{2}O_{7}+H_{2}O\ {\xrightarrow {100^{o}C}}\ Ag_{2}CrO_{4}+H_{2}CrO_{4}}}

{\ displaystyle {\ mathsf {Ag_ {2} Cr_ {2} O_ {7} + H_ {2} O \ {\ xrightarrow {100 ^ {o} C}} \ Ag_ {2} CrO_ {4} + H_ { 2} CrO_ {4}}}}

Literature

Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 3rd ed., rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.
Ripan R., Chetyanu I. Inorganic chemistry. Chemistry of metals. - M .: Mir, 1972. - T. 2. - 871 p.