What does the symbol (aq) represent in a chemical equation?

Options

A. Solid state
B. Gaseous state
C. Solution made in water
D. Supercooled state

Explanation

**Step-by-Step Solution:**

1. **Understanding Chemical Symbols**: In chemistry, various symbols are used to indicate the physical states of substances in a chemical equation. These symbols help us understand how the substances are interacting in a reaction.

2. **Identifying the Symbol (aq)**: The symbol (aq) stands for "aqueous." This term is derived from the Latin word "aqua," which means water.

3. **Meaning of (aq)**: When a substance is followed by the symbol (aq) in a chemical equation, it indicates that the substance is dissolved in water. This means that the substance is in a solution form, where it is mixed with water.

4. **Comparison with Other Symbols**: To clarify further:
- The symbol (s) represents a solid state.
- The symbol (g) represents a gaseous state.
- The symbol (l) represents a liquid state.
- Therefore, (aq) specifically indicates a solution made in water.

5. **Conclusion**: In summary, the symbol (aq) in a chemical equation represents a substance that is dissolved in water, indicating that it is in an aqueous solution.