Which of the following oxo acid of sulphur has O-O bond?H2 S2O7H2 S2O8H2 S2O6H2S¯2O5

To determine which of the given oxo acids of sulfur has an O-O bond, let's analyze each option.

1. H₂S₂O₇ (Disulfuric Acid): The structure consists of two sulfur atoms and seven oxygen atoms. There are no O-O bonds present in this compound.

2. H₂S₂O₈ (Oxydisulfuric Acid): This is an interesting compound that does indeed contain an O-O bond. Its structure includes two sulfur atoms and eight oxygen atoms, has a peroxide type linkage with an O-O bond.

3. H₂S₂O₆ (Disulfurous Acid): This oxo acid consists of two sulfur atoms and six oxygen atoms. There are no O-O bonds in this structure.

4. H₂S₂O₅ (Disulfurous Acid): The structure has two sulfur atoms and five oxygen atoms, which does not include any O-O bonds.

Final Answer

The oxo acid of sulfur that contains an O-O bond is H₂S₂O₈ (Oxydisulfuric Acid).