Write balanced chemical equations for the following reactions :
Sulphuric acid is treated with phosphorus.

Explanation

To write the balanced chemical equation for the reaction between sulfuric acid (H₂SO₄) and phosphorus (P₄), we can follow these steps:

### Step 1: Identify the Reactants and Products
- **Reactants**: Sulfuric acid (H₂SO₄) and Phosphorus (P₄)
- **Products**: Phosphorus acid (H₃PO₃) and Sulfur dioxide (SO₂)

### Step 2: Write the Unbalanced Equation
The unbalanced equation can be written as:
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