Why is it necessary to use acetic acid and not suplhuric acid for the acidification of sodium extract for testing suplhur by lead acetate test?

Explanation

To understand why acetic acid is necessary for the acidification of sodium extract for testing sulfur using the lead acetate test, we can break down the explanation into several steps:

### Step-by-Step Solution:

1. **Understanding the Sodium Extract**:
- The sodium extract (Na2 extract) is prepared from the sample being tested for the presence of sulfur. This extract contains sodium sulfide (Na2S) if sulfur is present.

2. **Acidification of Sodium Extract**:
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