Why a black suspension of lead (II) sulfide in water turns white when ozone is passed through it?

Explanation

To understand why a black suspension of lead (II) sulfide in water turns white when ozone is passed through it, we can break down the process into several steps:

### Step 1: Identify the Components
- **Lead (II) Sulfide (PbS)**: This is the black suspension in water.
- **Ozone (O3)**: A strong oxidizing agent.

### Step 2: Understand the Role of Ozone
- Ozone is known for its ability to act as a strong oxidizing agent due to its unstable nature. It can break down into nascent oxygen (O) and molecular oxygen (O2).
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