Give an example of displacement reaction.

Answer

### Step-by-Step Solution:

1. **Understanding Displacement Reactions**:
- Displacement reactions occur when a more reactive element displaces a less reactive element from a compound.

2. **Choosing an Example**:
- A common example of a displacement reaction is when zinc metal is placed in a copper sulfate solution.

3. **Observing the Initial State**:
- The copper sulfate solution is typically blue in color due to the presence of copper ions (Cu²⁺).

4. **Identifying Reactivity**:
- Zinc (Zn) is more reactive than copper (Cu). This is important because it determines the outcome of the reaction.

5. **Conducting the Reaction**:
- When zinc metal is added to the copper sulfate solution, zinc displaces copper from the solution.

6. **Result of the Reaction**:
- As a result, copper metal is deposited at the bottom of the container, and zinc sulfate (ZnSO₄) is formed, which is colorless.

7. **Final Equation**:
- The chemical equation for this displacement reaction can be written as:
\[ \text{Zn (s)} + \text{CuSO}_4 (aq) \rightarrow \text{Cu (s)} + \text{ZnSO}_4 (aq) \]