Anhydride of phyrosulphuric acid is

Options

A. `SO_(2)`
B. `H_(2)S`
C. `SO_(3)`
D. `S_(2)O_(3)`

Answer

To determine the anhydride of pyrosulfuric acid, we can follow these steps:

### Step 1: Identify the formula of pyrosulfuric acid.
- The formula for pyrosulfuric acid is H₂S₂O₇.

### Step 2: Understand what an anhydride is.
- An anhydride is formed by the removal of water (H₂O) from an acid.

### Step 3: Remove water from pyrosulfuric acid.
- To find the anhydride, we need to remove one molecule of water from pyrosulfuric acid (H₂S₂O₇).

### Step 4: Calculate the resulting compound.
- When we remove one molecule of water (H₂O) from H₂S₂O₇, we are left with sulfur trioxide (SO₃).

### Step 5: Conclude the answer.
- Therefore, the anhydride of pyrosulfuric acid is SO₃.

### Final Answer:
The anhydride of pyrosulfuric acid is SO₃.

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