A compound 'X' of sodium is used as an antacid and it decomposes on strong heating.
Write a balanced chemical equation to represent the decomposition of 'X'.

Explanation

To solve the problem, we need to identify the compound 'X' and then write the balanced chemical equation for its decomposition.

### Step-by-Step Solution:

1. **Identify the Compound 'X':**
- The question states that 'X' is a sodium compound used as an antacid. Common antacids include sodium bicarbonate (NaHCO₃), which is also known as sodium hydrogen carbonate. Therefore, we can identify 'X' as sodium bicarbonate (NaHCO₃).

2. **Understand the Decomposition Reaction:**
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