Question

chemical formula of black coating on Silver ??

Answer 1

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Black coating on silver coins is due to silver sulphide(Ag2s). 2 Ag(s) + H2S(g) ----- Ag2S(s) + H2(g). Green Coating on copper coins is due to copper carbonate and copper hydroxide.


Black coating on silver coins is silversulphide. It is formed by reaction ofsilver with hydrogen sulphide in the atmosphere. Green coating on copper is copper carbonate. It is formed by reaction of copper with carbon dioxide, moisture and oxygen in the atmosphere


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Answer 2

Hlo...

✔️HERE IS UR ANSWER...

✴️Silversulphide.

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