Give a reaction in which `H_(2)O` acts as an oxidising agent.

Explanation

To provide a step-by-step text solution for the question "Give a reaction in which H₂O acts as an oxidizing agent," we can follow these steps:

### Step 1: Understand the Role of Oxidizing Agents
An oxidizing agent is a substance that gains electrons in a chemical reaction and is reduced itself while causing another substance to be oxidized. In this case, we need to identify a reaction where water (H₂O) acts as the oxidizing agent.

**Hint:** Remember that oxidizing agents are reduced in the process of oxidizing another substance.

### Step 2: Identify a Suitable Reaction
...