Write the observations : Ammonia gas is shaken with blue litmus solution

Explanation

**Step-by-Step Solution:**

1. **Identify the Substance**: Ammonia gas (NH₃) is known to be a weak base.

2. **Understand the Litmus Test**: Litmus is a pH indicator used to determine whether a solution is acidic or basic. Blue litmus paper indicates a basic solution, while red litmus paper indicates an acidic solution.

3. **Determine the pH of Ammonia**: Ammonia has a pH of approximately 11.6, which confirms that it is a basic substance.

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