Cadmium sulfite

Cadmium sulfite
Cadmium sulfite
Are common
Systematic ; name	Cadmium sulfite
Traditional names	Cadmium Sulphate
Chem. formula	CdSO 3
Physical properties
condition	colorless crystals
Molar mass	192.47 g / mol
Thermal properties
T. decomp.	400 ° C
Chemical properties
Solubility in water	0.05 g / 100 ml
Classification
Reg. CAS number	13477-23-1
Reg. EINECS number

Cadmium sulfite is an inorganic compound, cadmium salt and sulfurous acid with the formula CdSO ₃ , colorless crystals, insoluble in water, forms crystalline hydrate .

Content

Getting

Dissolution of cadmium carbonate in a solution of sulphurous acid:

{\mathsf {CdCO_{3}+H_{2}SO_{3}\ {\xrightarrow {}}\ CdSO_{3}\downarrow +CO_{2}\uparrow +H_{2}O}}

{\ displaystyle {\ mathsf {CdCO_ {3} + H_ {2} SO_ {3} \ {\ xrightarrow {}} \ CdSO_ {3} \ downarrow + CO_ {2} \ uparrow + H_ {2} O}}}

Physical Properties

Cadmium sulfite forms colorless crystals.

Not soluble in water.

Forms a crystalline hydrate of the composition CdSO ₃ • 2H ₂ O.

Chemical Properties

It is soluble in solutions of alkali metal sulfites :

{\mathsf {CdSO_{3}+K_{2}SO_{3}\ {\xrightarrow {}}\ K_{2}[Cd(SO_{3})_{2}]}}

{\ displaystyle {\ mathsf {CdSO_ {3} + K_ {2} SO_ {3} \ {\ xrightarrow {}} \ K_ {2} [Cd (SO_ {3}) _ {2}]}}}

Literature

Chemistry Handbook / Editorial: Nikolsky B.P. et al. - 3rd ed., rev. - L .: Chemistry, 1971. - T. 2. - 1168 p.
CRC Handbook of Chemistry and Physics . - 89th Edition. - Taylor and Francis Group, LLC, 2008-2009.