Question

What is the oxidation half-reaction for 2Mg + O2 + 2Mgo?

Answer 1

Answer:

B => Mg° => Mg⁺² + 2e⁻

Explanation:

2Mg° + O₂ => 2MgO  rewrite => Mg° + 1/2O₂ => 2MgO

Oxidation Half Rxn => Mg° => Mg⁺² + 2e⁻

Reduction Half Rxn => 1/2O₂ + 2e⁻ => 2O⁻

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FYI Note =>  For half-reactions one always finds the electrons listed on the product side of the reaction for oxidation reactions and for reduction reactions on the reactant side.