Which of the following statements regardign `H_(2)SO_(5)` is/are correct ?

Options

A. The oxidation number of sulphur is +6
B. Two oxygen atoms are present in form of peroxide
C. Three oxygen atoms are present in form of oxide
D. The oxidation state of sulphur is +8

Answer

To determine which statements regarding \( H_2SO_5 \) (peroxo monosulphuric acid) are correct, we will analyze each statement step by step.

### Step 1: Identify the structure of \( H_2SO_5 \)
- \( H_2SO_5 \) is known as peroxo monosulphuric acid or carose acid.
- The structure consists of a sulfur atom bonded to one hydrogen atom, three oxygen atoms in the form of oxides, and two oxygen atoms in the form of peroxides.

### Step 2: Calculate the oxidation state of sulfur in \( H_2SO_5 \)
- The oxidation state of hydrogen is \( +1 \).
- The oxidation state of oxygen in oxides is \( -2 \) and in peroxides is \( -1 \).
- The formula can be represented as:
\[ 2(+1) + x + 3(-2) + 2(-1) = 0 \]
where \( x \) is the oxidation state of sulfur.
- Simplifying this gives:
\[ 2 + x - 6 - 2 = 0 \implies x - 6 = 0 \implies x = +6 \]
- Thus, the oxidation state of sulfur in \( H_2SO_5 \) is \( +6 \).

### Step 3: Analyze the statements
1. **Statement A**: The oxidation number of sulfur is \( +6 \).
- This statement is correct based on our calculation.

2. **Statement B**: Two oxygen atoms are present in the form of peroxide.
- In the structure of \( H_2SO_5 \), there are indeed two oxygen atoms that are part of the peroxide group (O-O bond), which confirms this statement as correct.

3. **Statement C**: Three oxygen atoms are present in the form of oxide.
- The three oxygen atoms that are not part of the peroxide group are in the oxide form (each having an oxidation state of \( -2 \)). Thus, this statement is also correct.

4. **Statement D**: The oxidation state of sulfur is \( +8 \).
- This statement is incorrect because we calculated the oxidation state of sulfur to be \( +6 \), which is the maximum oxidation state sulfur can achieve.

### Conclusion
- The correct statements regarding \( H_2SO_5 \) are:
- A: Correct
- B: Correct
- C: Correct
- D: Incorrect

### Final Answer
The correct statements are A, B, and C.

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