In which of the following reactions does hydrogen peroxide act as a reducing agent?

H₂S + H₂O₂ \(\to\) S + 2H₂O

PbSO₃ + H₂O₂ \(\to\) PbSO₄ + H₂O

2I+ 2H⁺ + H₂O₂ \(\to\) I₂ + 2H₂O

PbO₂ + 2HNO₃ + H₂O₂ \(\to\) Pb(NO₃)₂ + 2H₂O + O₂

SO₂ + H₂O₂ \(\to\) H₂SO₄

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Mowinstar

5 years ago

when i made more research concerning this question i found out that Hydrogen peroxide is an oxidizing agent but in the presence of a stronger oxidizing agent like concentrated HNO3, it acts as a reducing agent and itself transformed into an oxygen gas ie changing the oxidation state of oxygen from -1 in H2O2 to zero in O2 [D]