Whats the answer??

Question

Are any of these equations redox reactions? if so what are their reducing and oxidizing agents?

7O₂(g)+2CH₃CH₃(g)→4CO2(g)+6H₂O(g)

HSO^-₄(aq)+OH^-(aq)→SO₄^2-(aq)+H₂O(l)



Fe(s)+CuSO₄→FeSO₄(aq)+Cu(s)

Answer 1

7O₂(g)+2CH₃CH₃(g)→4CO2(g)+6H₂O(g) - Yes. O₂ is oxidizing agent. CH3CH3 is reducing agent.

HSO^-₄(aq)+OH^-(aq)→SO₄^2-(aq)+H₂O(l) - no



Fe(s)+CuSO₄→FeSO₄(aq)+Cu(s) - Yes. Fe is reducing agent. (CuSO₄) is oxidizing agent.