Question

The compound(s) having peroxide linkage is(are)

• A. H₂S₂O₇
• B. H₂S₂O₈
• C. H₂S₂O₅
• D. H₂SO₅

Answer 1

The Correct Option is B, D

Structures of Sulfuric Acid Derivatives 

1. Structure of \( \text{H}_2\text{S}_2\text{O}_7 \) (Pyrosulfuric Acid):

No peroxide linkage present.

2. Structure of \( \text{H}_2\text{S}_2\text{O}_8 \) (Peroxydisulfuric Acid):

Contains an \( -\text{O-O}- \) (peroxide) linkage.

3. Structure of \( \text{H}_2\text{S}_2\text{O}_5 \) (Pyro Sulfurous Acid):

No peroxide linkage present.

4. Structure of \( \text{H}_2\text{SO}_5 \) (Peroxomonosulfuric Acid):

Contains an \( -\text{O-O}- \) (peroxide) linkage.

Answer 2

To solve the problem, identify which compound(s) contain a peroxide (–O–O–) linkage.

Analysis of compounds:

• H₂S₂O₇ (Disulfuric acid or pyrosulfuric acid):
  Contains bridging oxygen atoms but no peroxide (O–O) bond.
  No peroxide linkage.
• H₂S₂O₈ (Peroxydisulfuric acid):
  Contains an –O–O– (peroxide) linkage between the two sulfur atoms.
  Has peroxide linkage.
• H₂S₂O₅ (Hypodithionous acid):
  No peroxide linkage; structure contains S–S bond but no O–O bond.
  No peroxide linkage.
• H₂SO₅ (Peroxymonosulfuric acid or Caro’s acid):
  Contains a peroxide (O–O) bond attached to sulfur.
  Has peroxide linkage.

Final Answer:
Compounds with peroxide linkage are:
\[ \boxed{\text{H}_2\text{S}_2\text{O}_8 \text{ and } \text{H}_2\text{SO}_5} \]