AP EAMCET201823 Apr 2018Evening ShiftChemistryHydrogenActual
In which of the following reactions, oxygen is not liberated?
Options
- AReaction of HOCl with H ₂ O ₂
- BReaction of acidified KMnO ₄ with H ₂ O ₂
- CReaction of iodine with H ₂ O ₂ in basic medium
- DReaction of lead sulphide with H ₂ O ₂
Correct answer
D. Reaction of lead sulphide with H ₂ O ₂
Step-by-step solution
(i) 2 HOCl + H ₂ O ₂ 2 H ₂ O + Cl ₂(g)+ O ₂(g) (ii) 3 H ₂ O ₂+2 KMnO ₄ 3 O ₂+2 MnO ₂+2 KOH +2 H ₂ O (iii) H ₂ O ₂+ I ₂ 2 HI + O ₂ (iv) PbS +4 H ₂ O ₂ PbSO ₄+4 H ₂ O