Aqueous solution of ammonia consists of

Options

A. `H^(+)`
B. `OH^(-)`
C. `NH_(4)^(+)`
D. `NH_(4)^(+)` and `OH^(-)`

Explanation

To solve the question regarding what an aqueous solution of ammonia consists of, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Chemical Formula of Ammonia**:
- Ammonia is represented by the chemical formula \( \text{NH}_3 \).

2. **Dissolution in Water**:
- When ammonia is dissolved in water, it interacts with water molecules. The reaction can be represented as:
\[ \text{NH}_3 + \text{H}_2\text{O} \rightleftharpoons \text{NH}_4\text{OH} \]
- Here, ammonia reacts with water to form ammonium hydroxide.

3. **Ionization of Ammonium Hydroxide**:
- Ammonium hydroxide (\( \text{NH}_4\text{OH} \)) can further dissociate into ions:
\[ \text{NH}_4\text{OH} \rightleftharpoons \text{NH}_4^+ + \text{OH}^- \]
- This shows that ammonium hydroxide ionizes to produce ammonium ions (\( \text{NH}_4^+ \)) and hydroxide ions (\( \text{OH}^- \)).

4. **Conclusion**:
- Therefore, the aqueous solution of ammonia consists of ammonium ions (\( \text{NH}_4^+ \)) and hydroxide ions (\( \text{OH}^- \)).

5. **Final Answer**:
- The correct answer is that an aqueous solution of ammonia consists of \( \text{NH}_4^+ \) and \( \text{OH}^- \).