Chemistry
Explain the terms – oxidation and reduction in terms of addition and removal of oxygen/hydrogen with suitable examples.
Hydrogen
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Answer
Oxidation is addition of oxygen to a substance or removal of hydrogen from a substance. For example,
Addition of oxygen — 2Cu + O2 ⟶ 2CuO
Removal of hydrogen — H2S + Cl2 ⟶ 2HCl + S
Reduction is addition of hydrogen to a compound or removal of oxygen from a compound.
Removal of oxygen — CuO + H2 ⟶ Cu + H2O
Addition of hydrogen — Cl2 + H2S ⟶ 2HCl + S
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