Displacement Reaction
A displacement reaction is a reaction in which a more reactive element pushes out a less reactive element from its compound.
Practice This ConceptMain explanation
Teacher explanation
This reaction depends on the reactivity series. A more reactive metal can replace a less reactive metal from its salt solution. The same idea also works for some non-metals in special cases.
Example
Iron placed in copper sulphate solution displaces copper.
Simple analogy
More reactive wins the place.
Common confusion
Students often forget that the replacing element must be more reactive than the displaced one.
Exam tip
Always compare reactivity before naming the reaction. Without reactivity, displacement cannot be decided.
Answer writing and exam use
1-mark use
Write the exact meaning of displacement reaction in one clean line.
2-mark use
Define displacement reaction and add one example or condition.
3-mark use
Explain displacement reaction, show the method or example, and mention the common mistake.
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