Which of the following reactions are redox reactions?
Mg + 2HCl -> MgCl2 + H2
2H2O2 -> 2H2O + O2
CuSO4 + 2NaOH -> Na2SO4 + Cu(OH)2
4Fe + 3O2 -> 2Fe2O3

Respuesta :

Following reactions are redox reactions is 2H₂O₂ → 2H₂O + O₂

A redox  reaction can be defined as the chemical reaction in which electron are transferred between two reactant participating in it and this transfer of electron can be identified by observing the changes in the oxidation state of the reacting species and this reaction is the disproportion reaction and in this reaction in which the oxygen undergone oxidation and reduction simultaneously therefore the redox reaction is 2H₂O₂ → 2H₂O + O₂

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