Barium hexacyanoferrate (II)

Hexacyanoferrate
Hexacyanoferrate
Are common
Systematic ; name	Barium hexacyanoferrate (II)
Traditional names	Barium hexacyanoferrate; barium hexacyanoferroate
Chem. formula	Ba 2 [Fe (CN) 6 ]
Physical properties
condition	hydrate - yellow crystals
Molar mass	486.60 g / mol
Density	hydrate - 2.67 g / cm³
Thermal properties
Enthalpy of Education	-2351 kJ / mol
Chemical properties
Solubility in water	0.14 15 ; 0.74 100 g / 100 ml
Solubility in ethanol	not soluble
Classification
Reg. CAS number
PubChem
Reg. EINECS number
Smiles
Inchi
ChemSpider

Barium hexacyanoferrate (II) is an inorganic compound, a salt of barium and ferruginous acid with the formula Ba ₂ [Fe (CN) ₆ ], is slightly soluble in water, forms crystalline hydrate - yellow crystals.

Content

Getting

The reaction of barium chloride and potassium hexacyanoferrate (II) :

{\mathsf {2BaCl_{2}+K_{4}[Fe(CN)_{6}]\ {\xrightarrow {}}\ Ba_{2}[Fe(CN)_{6}]\downarrow +4KCl}}

{\ displaystyle {\ mathsf {2BaCl_ {2} + K_ {4} [Fe (CN) _ {6}] \ {\ xrightarrow {}} \ Ba_ {2} [Fe (CN) _ {6}] \ downarrow + 4KCl}}}

with an excess of potassium hexacyanoferrate (II), a complex salt is formed:

{\mathsf {BaCl_{2}+K_{4}[Fe(CN)_{6}]\ {\xrightarrow {}}\ K_{2}Ba[Fe(CN)_{6}]\downarrow +2KCl}}

{\ displaystyle {\ mathsf {BaCl_ {2} + K_ {4} [Fe (CN) _ {6}] \ {\ xrightarrow {}} \ K_ {2} Ba [Fe (CN) _ {6}] \ downarrow + 2KCl}}}

Physical Properties

Barium hexacyanoferrate (II) forms crystals of crystalline hydrate composition Ba ₂ [Fe (CN) ₆ ] • 6H ₂ O - yellow crystals that begin to lose water at 40 ° C.

Slightly soluble in water, insoluble in ethanol .

Chemical Properties

Used to obtain ferruginous acid :

{\mathsf {Ba_{2}[Fe(CN)_{6}]+2H_{2}SO_{4}\ {\xrightarrow {}}\ H_{4}[Fe(CN)_{6}]+2BaSO_{4}\downarrow }}

{\ displaystyle {\ mathsf {Ba_ {2} [Fe (CN) _ {6}] + 2H_ {2} SO_ {4} \ {\ xrightarrow {}} \ H_ {4} [Fe (CN) _ {6 }] + 2BaSO_ {4} \ downarrow}}}

Literature

Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 3rd ed., rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.
Tanaev I.V. Chemistry of ferrocyanides. - M .: Nauka, 1971. - 320 p.