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Chemistry
Burns
25 October, 02:25
Cu2 - > Cu2 + is it getting oxidized?
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Shea Mcmillan
25 October, 05:56
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Cu²⁺ + 2e⁻ → Cu (copper gets reduced)
Cu → Cu²⁺ + 2e⁻ (copper gets oxidized)
Oxidation:
Oxidation involve the removal of electrons and oxidation state of atom of an element is increased.
Reduction:
Reduction involve the gain of electron and oxidation number is decreased.
Consider the following reactions.
4KI + 2CuCl₂ → 2CuI + I₂ + 4KCl
the oxidation state of copper is changed from + 2 to + 1 so copper get reduced.
CO + H₂O → CO₂ + H₂
the oxidation state of carbon is + 2 on reactant side and on product side it becomes + 4 so carbon get oxidized.
Na₂CO₃ + H₃PO₄ → Na₂HPO₄ + CO₂ + H₂O
The oxidation state of carbon on reactant side is + 4. while on product side is also + 4 so it neither oxidized nor reduced.
H₂S + 2NaOH → Na₂S + 2H₂O
The oxidation sate of sulfur is - 2 on reactant side and in product side it is also - 2 so it neither oxidized nor reduced.
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