Give reasons why?
Tap water is not used to prepare a solution of silver nitrate in the laboratory.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Composition of Tap Water:**
- Tap water contains various dissolved ions, including chloride ions (Cl⁻), sulfate ions (SO₄²⁻), and others.

2. **Identifying the Reaction with Silver Nitrate:**
- When silver nitrate (AgNO₃) is dissolved in tap water, the silver ions (Ag⁺) can react with the chloride ions (Cl⁻) or sulfate ions (SO₄²⁻) present in the tap water.

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