In which reaction does H 2 O 2 act as an oxidising agent in acidic medium?

H 2 O 2 + 2Fe 2+ + 2H+ → 2Fe 3+ + 2H 2 O

2H 2 O 2 → 2H 2 O + O 2 (decomposition)

H 2 O 2 + Na 2 SO 3 → Na 2 SO 4 + H 2 O

In which reaction does H 2 O 2 act as an oxidising agent in…

Answer: H₂O₂ + 2Fe²⁺ + 2H+ → 2Fe³⁺ + 2H₂O.

A H₂O₂ + 2Fe²⁺ + 2H+ → 2Fe³⁺ + 2H₂O
B 2H₂O₂ → 2H₂O + O₂ (decomposition)
C H₂O₂ + 2KMnO₄ → products
D H₂O₂ + Na₂SO₃ → Na₂SO₄ + H₂O

Correct answer: A. H₂O₂ + 2Fe²⁺ + 2H+ → 2Fe³⁺ + 2H₂O

Explanation: H₂O₂ oxidises Fe²⁺ to Fe³⁺ in the Fenton reaction; this demonstrates its oxidising role in acidic solution.

Each water molecule's O-H bonds (covalent, solid) can hydrogen-bond (dashed) to neighbouring molecules, forming an extended network responsible for water's unusually high boiling point and density anomaly.

Concept context

The simplest and most abundant element in the universe. Study its unique position in the periodic table, isotopes (protium, deuterium, tritium), properties of water and hydrogen peroxide, and industrial uses.

Read the full Hydrogen notes →

In which reaction does H2O2 act as an oxidising agent in acidic medium?

Concept context

More Hydrogen questions

In which reaction does H₂O₂ act as an oxidising agent in acidic medium?