Which of the following are peroxo acids of sulphur?

Options

A. `H_2S_2O_6 and H_2S_2O_7`
B. `H_2S_2O_7 and H_2S_2O_8`
C. `H_2SO_5 and H_2S_2O_7`
D. `H_2SO_5 and H_2S_2O_8`

Explanation

To determine which of the given options are peroxo acids of sulfur, we need to understand what a peroxo acid is. A peroxo acid contains a peroxo group (-O-O-) in its structure.

### Step-by-Step Solution:

1. **Understand the Definition of Peroxo Acids**:
- Peroxo acids are acids that contain one or more peroxo groups (-O-O-). This group is crucial in identifying peroxo acids.

2. **Identify the Structures of the Given Compounds**:
- We need to analyze the structures of the given compounds to see if they contain the peroxo linkage.

3. **Analyze Each Compound**:
- **H2SO6**: This compound has a structure that includes double bonds and hydroxyl groups but does not contain a peroxo linkage.
- **H2SO7**: Similar to H2SO6, it does not show any peroxo linkage.
- **H2SO5**: This compound has a structure that includes a peroxo linkage (-O-O-), indicating that it is a peroxo acid.
- **H2SO8**: This compound also contains a peroxo linkage, confirming that it is a peroxo acid.

4. **Conclusion**:
- From the analysis, H2SO5 and H2SO8 are identified as peroxo acids of sulfur.

5. **Final Answer**:
- The correct answer is that H2SO5 and H2SO8 are peroxo acids of sulfur.