Astha has been collecting silver and copper coins. One day she observed a black coating on silver coin and green coating on copper coins. Which chemical phenomenon is responsible for these coatings ? Write the chemical name of black and green coatings.
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4
the chemical formula
black-Silver sulphide
green-Basic copper carbonate
phenomenon-Corrosion
black-Silver sulphide
green-Basic copper carbonate
phenomenon-Corrosion
Answered by
2
Answer:
Corrosion is responsible for this coating. Black coating is due to formation of Ag2S and green
coating is due to formation of CuCO3.Cu (OH)2
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