BITSAT2010ChemistryRedox ReactionsActual
In which of the following reactions, H ₂ O ₂ is acting as a reducing agent?
Options
- AH ₂ O ₂+ SO ₂ H ₂ SO ₄
- B2 KI + H ₂ O ₂ 2 KOH + I ₂
- CPbS +4 H ₂ O ₂ PbSO ₄+4 H ₂ O
- DAg ₂ O + H ₂ O ₂ 2 Ag + H ₂ O + O ₂
Correct answer
D. Ag ₂ O + H ₂ O ₂ 2 Ag + H ₂ O + O ₂
Step-by-step solution
SO ₂ changes to H ₂ SO ₄ (O.N. changes from +4 to +6 oxidation )2 KI I ₂( O . S . changes from -1 to 0 oxidation) PbS PbSO ₄( O . S . changes from -2 to +6 oxidation) Ag ₂ O 2 Ag ( O . S . changes from +1 to 0 reduction)