give chemical reaction to show corrosion and iron, silver copper
Answers
Answer:
Iron = Fe2 O3.xH20
Silver= AgeS
Copper = [CuCo3.Cu (OH)2]
Explanation:
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Answer:
(1)Corrosion in Iron---->
4Fe + 3O2 + H2O-------> Fe2O3.xH2O
{( Iron) + ( oxygen)+ (water)---> (Iron oxide)}
# x= variable number..
(2) Corrosion in silver------->
2Ag + H2S------------>. Ag2S + H2
{( silver) + ( hydrogen sulphide) -----> ( silver sulphide)+(hydrogen)}
# the colour of silver sulphide is Black.
(3) Corrosion in copper---------->
2Cu + H2O + CO2 + O2 ------> Cu(OH)2 + CuCO3
{(copper)(water)(carbondioxide) (oxygen)----->(copper hydroxide) (copper carbonate)}
# the colour of copper hydroxide+ copper carbonate is green.
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