Question detail
What is produced at the cathode during the electrolysis of an aqueous solution if the metal is less reactive than hydrogen?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Electrolysis
Question
- A. Hydrogen gas
- B. The metal
- C. Oxygen gas
- D. Chlorine gas
Answer
The metal
Explanation
If the metal is less reactive than hydrogen, it will be discharged at the cathode during electrolysis.
Common mistake
Misunderstanding Reactivity
Students often think that the metal will always be produced at the cathode during electrolysis, regardless of its reactivity compared to hydrogen.
Remind students that a metal will only be produced at the cathode if it is less reactive than hydrogen; otherwise, hydrogen gas will be produced instead.
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