kobolttiIIkarbonaattia

Koboltti(II)karbonaatti is an inorganic chemical compound with the formula CoCO3. It is a pink or reddish solid that is insoluble in water. It occurs naturally as the mineral spherocobaltite.

Koboltti(II)karbonaatti can be prepared by precipitation from a solution of a soluble cobalt(II) salt, such as cobalt(II) chloride or cobalt(II) sulfate, by adding a soluble carbonate, such as sodium carbonate or potassium carbonate. The reaction is typically carried out in aqueous solution.

Co^2+(aq) + CO3^2-(aq) -> CoCO3(s)

This compound is used in the production of other cobalt compounds, such as cobalt oxides, which are used as pigments and catalysts. It can also be used as a colorant in ceramics and glass. In some applications, it serves as a precursor for cobalt metal.

Koboltti(II)karbonaatti decomposes upon heating to form cobalt(II) oxide and carbon dioxide.

CoCO3(s) -> CoO(s) + CO2(g)

This thermal decomposition occurs at temperatures above approximately 200 degrees Celsius. The stability of cobalt(II) carbonate is influenced by factors such as pressure and the presence of other gases.

It is important to handle koboltti(II)karbonaatti with care, as cobalt compounds can have toxic effects. Appropriate safety precautions should be taken to avoid inhalation or ingestion.

---