Question detail
Explain how electron transfer occurs in a displacement reaction, using an example.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Reactivity of metals
Question
Explain how electron transfer occurs in a displacement reaction, using an example.
Answer
In a displacement reaction, a more reactive metal displaces a less reactive metal from its compound. For example, when zinc is added to copper sulfate, zinc donates electrons to copper ions, reducing them to copper metal while itself becoming oxidised to zinc ions.
Explanation
This answer effectively demonstrates the concept of electron transfer in displacement reactions, linking it to the reactivity series. It tests the student's understanding of how reactivity influences electron transfer.
Common mistake
Misunderstanding Electron Transfer
Students often confuse the concept of electron transfer in displacement reactions, thinking that the metal being displaced is gaining electrons instead of losing them.
To fix this, students should remember that in a displacement reaction, the more reactive metal loses electrons (is oxidised) while the less reactive metal gains those electrons (is reduced).
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