First slide

Hydrogen Peroxide

Question

Which one of the following reactions represents the oxidizing property of H₂O₂ ?

Easy

A

2KMnO₄ + 3H₂SO₄+ 5H₂O₂ → K₂SO₄ + 2MnSO₄+8H₂O + 5O₂
B

2K₃[Fe(CN)₆]+ 2KOH + H₂O₂ → 2K₄[Fe(CN)₆] + 2H₂O+O₂
C

PbO₂ +H₂O₂ → PbO+H₂O+O₂
D

2KI +H₂SO₄ +H₂O₂ → K₂SO₄ +I₂+2H₂O

Solution

⇒

In the above reaction H₂O₂ reduces the Mn⁺⁷ to Mn⁺² there H₂O₂ acts as reducing agent.
⇒

In the above reaction H₂O₂ acts as a reducing agent since it reducing agent Fe⁺³ [ferric] to Fe⁺² [ferrous].
⇒

In the above reaction H₂O₂ acts as a reducing agent since it reducing agent Pb⁺⁴to Pb⁺²
⇒

In the above reaction H₂O₂ acts as oxidising agent,since it oxidises the $I^{- 1} to I_{2}$

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