Hydrogen chloride gas is prepared in the laboratory using concentrated sulphuric acid and sodium chloride. Answer the question that follow based on this reaction :
Why is concentrated sulphuric acid used instead of concentrated nitric acid ?

Explanation

To answer the question of why concentrated sulfuric acid is used instead of concentrated nitric acid for the preparation of hydrogen chloride gas in the laboratory, we can break down the reasoning into a step-by-step explanation.

### Step-by-Step Solution:

1. **Understanding the Reaction**:
- The reaction to produce hydrogen chloride (HCl) gas involves sodium chloride (NaCl) and concentrated sulfuric acid (H₂SO₄).
- The chemical equation for the reaction is:
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