Both `NO_(2)` and `Br_(2)` are brown gases. How can they be identified if placed separately in two containers?

Explanation

To identify the gases NO₂ and Br₂ when they are placed in separate containers, we can follow these steps:

### Step-by-Step Solution:

1. **Preparation**: Take two separate containers, one containing NO₂ and the other containing Br₂. Ensure that both gases are isolated and can be tested without contamination.

2. **Adding Water**: Carefully add a small amount of water to each container. It is important to add water slowly to avoid any splashing or reaction that could interfere with the results.

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