Name the gas evolved in each of the following cases :
Action of dilute sulphuric acid on sodium carbonate.

Explanation

To determine the gas evolved when dilute sulfuric acid reacts with sodium carbonate, we can follow these steps:

### Step 1: Identify the Reactants
The reactants in this reaction are dilute sulfuric acid (H₂SO₄) and sodium carbonate (Na₂CO₃).

### Step 2: Write the Chemical Equation
When dilute sulfuric acid reacts with sodium carbonate, the reaction can be represented as:
\[ \text{Na}_2\text{CO}_3 + \text{H}_2\text{SO}_4 \rightarrow \text{Na}_2\text{SO}_4 + \text{H}_2\text{O} + \text{CO}_2 \]
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