Question detail
For The reactivity series, which electrolysis focus answer best supports this Unit 4.4 objective: Use displacement reaction results to compare metal reactivity?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Reactivity of metals
Question
- A. Zinc displaces copper from copper sulfate - correct electrolysis focus for displacement
- B. Wrong electrolysis focus: confuses displacement with a nearby Unit 4.4 chemical change idea
- C. Wrong particle check: uses the wrong ion, electrode, acid-base term, or product for The reactivity series
- D. Wrong reaction link: does not support Use displacement reaction results to compare metal reactivity
Answer
The correct option is Zinc displaces copper from copper sulfate - correct electrolysis focus for displacement.
Explanation
The correct option is "Zinc displaces copper from copper sulfate - correct electrolysis focus for displacement" because it supports the approved learning objective: Use displacement reaction results to compare metal reactivity. The other options are incorrect or weaker because they are vague, use the wrong Chemistry context, or do not clearly explain the answer for The reactivity series.
Common mistake
Misunderstanding Displacement Reactions
Students often confuse the concept of displacement reactions, thinking that the less reactive metal is the one that displaces the more reactive metal from its compound.
To fix this, remember that in a displacement reaction, it is the more reactive metal that displaces the less reactive metal from its compound. Review the reactivity series to reinforce which metals are more reactive.
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