a boy collects silver as well as copper coins. one day he founds a black coating on silver coins. mention chemical phenomena responsible for black and green coatings . write chemical names for these coatings
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Hey mate..
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The answer to your question is:--
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.
2 Cu + H2O + CO2 + O2 ------ > Cu(OH)2 + CuCO3
=========
The answer to your question is:--
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.
2 Cu + H2O + CO2 + O2 ------ > Cu(OH)2 + CuCO3
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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.
2 Cu + H2O + CO2 + O2 ------ > Cu(OH)2 + CuCO3
Hope this helps.
Read more on Brainly.in - https://brainly.in/question/1468614#readmore
2 Ag(s) + H2S(g) ----- Ag2S(s) + H2(g).
Green Coating on copper coins is due to copper carbonate and copper hydroxide.
2 Cu + H2O + CO2 + O2 ------ > Cu(OH)2 + CuCO3
Hope this helps.
Read more on Brainly.in - https://brainly.in/question/1468614#readmore
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