oserve the following picture and list down the activities in which water is used.
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Observe the following picture and write down the chemical reaction with explanation.
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Rusting of iron :
The rusting of iron is an electrochemical process that begins with the transfer of electrons from iron to oxygen.
(i) O
2
+4e
−
+2H
2
O⟶4OH
−
(ii) Fe⟶Fe
2+
+2e
−
(iii) 4Fe
2+
+O
2
⟶4Fe
3+
+2O
2−
(iv) Fe
2+
+2H
2
O⇌Fe(OH)
2
+2H
+
Fe
3+
+3H
2
O⇌Fe(OH)
3
+3H
+
(v) Fe(OH)
2
⇌FeO+H
2
O
Fe(OH)
3
⇌FeO(OH)+H
2
O
2FeO(OH)⇌Fe
2
O
3
+H
2
O
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