Can a less electropositive metal displace more electropositive metal from its salt solution ?

Answer

To answer the question, "Can a less electropositive metal displace a more electropositive metal from its salt solution?" we will analyze the concepts of electropositivity and the reactivity series of metals.

### Step-by-Step Solution:

1. **Understanding Electropositivity**:
- Electropositivity refers to the ability of a metal to lose electrons and form positive ions. Metals that are more electropositive are more reactive and readily lose electrons.

2. **Reactivity Series**:
- The reactivity series is a list of metals arranged in order of decreasing reactivity. More reactive metals can displace less reactive metals from their compounds in solution. For example, in the series, potassium is more reactive than iron, which is more reactive than copper.

3. **Displacement Reactions**:
- A displacement reaction occurs when a more reactive metal displaces a less reactive metal from its salt solution. For instance, if iron is placed in a solution of copper sulfate (CuSO₄), iron will displace copper because it is more reactive.

4. **Conclusion**:
- Since a less electropositive (and therefore less reactive) metal cannot displace a more electropositive (and more reactive) metal from its salt solution, the answer to the question is **no**.

### Final Answer:
No, a less electropositive metal cannot displace a more electropositive metal from its salt solution.