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rusting of iron is a _chemical change
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Rusting of iron is a double displacement chemical change if i am not wrong
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Answer:
electrochemical
Explanation:
It is a chemical change as the composition of matter changes.
Different regions on iron surface become cathode and anode.
At anode :
Fe is oxidised to Fe2+
At cathode :
O2 is reduced to H2O
Fe2+ ions further react with water and form Fe3+ ions.
A red hydrated oxide is formed which we call rust.
2Fe3+ + 4H2O = Fe2O3.H2O + 6H+
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