Explain why phosphorous acid is not a tribasic acid like phosphoric acid through both acids contain three hydrogen in their molecules

Explanation

To explain why phosphorous acid (H₃PO₃) is not a tribasic acid like phosphoric acid (H₃PO₄), despite both containing three hydrogen atoms, we can follow these steps:

### Step 1: Identify the Chemical Formulas
- Phosphorous acid has the formula H₃PO₃.
- Phosphoric acid has the formula H₃PO₄.

### Step 2: Analyze the Structure of Each Acid
- The structure of phosphorous acid (H₃PO₃) can be represented as:
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