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It changes color for Purple to Blue if it was heated and if it was cooled down then it will change color from purple to pink

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13y ago
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14y ago

A red colour of cobalt chloride confirms the reaction is being occur.

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Q: What would you see if excess cobalt oxide is warmed with hydrochloric acid?
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What would u see if excess cobalt oxide is warmed with some hydrochloric acid solution?

Hi


What is the name of the ionic compound Co2O?

Cobalt II Oxide


What is the chemical name of cobalt oxide using the stock system?

Cobalt oxides are: cobalt(I) oxide, cobalt(II) oxide and cobalt(II,III) oxide.


Cobalt II Oxide formula?

The formula for cobalt (II) oxide is CoO.


Is dilute hydrochloric oxide a strong acid?

yes dilute hydrochloric oxide is a strong acid


What is cobalt glass?

cobalt glass is glass containing cobalt oxide or cobaltous oxide as a colouring agent. These oxides give the glass a blue colouring.


Sodium Oxide plus Hydrochloric Acid?

sodium oxide + hydrochloric acid -> sodium chloride + hydrogen


What does the roman number III indicate in cobalt III oxide indicate?

The roman number III indicates that the ion of cobalt present in this form of cobalt in the cobalt oxide is Co3+. Since cobalt also exists as a Co2+ form, these must be distinguished in some way. The standard is to use roman numerals to denote the charge. Both Cobalt (III) oxide and Cobalt (II) oxide still have the chemical formula of Co3O4.


Is cobalt oxide a base or a salt?

Cobalt oxide can refer toCobalt(II) oxide, CoOCobalt(III) oxide, Co2O3Cobalt(II,III) oxide, Co3O4.The three have different properties.


What compound reduced by hydrogen1 cobalt oxide 2 mangnese dioxide 3 magnesium oxide 4 calcium oxide?

Cobalt oxide can be reduced by hydrogen to form cobalt metal. Manganese dioxide can be reduced by hydrogen to form manganese metal. Magnesium oxide cannot be reduced by hydrogen. Calcium oxide cannot be reduced by hydrogen.


What is formed when cobalt chloride is tested with zinc oxide?

Cobalt Green, a pigment.


Does copper oxide react with hydrochloric acid?

Yes copper oxide reacts with hydrochloric acid and it forms a blue green compound.