Question detail
What is produced as a byproduct of the reaction in a hydrogen fuel cell?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Chemical cells and fuel cells (chemistry only)
Question
- A. Carbon dioxide
- B. Oxygen
- C. Water
- D. Hydrogen gas
Answer
Water
Explanation
The reaction in a hydrogen fuel cell produces water as a byproduct when hydrogen is oxidized.
Common mistake
Confusion about oxidation
Students often confuse oxidation with reduction, thinking that oxidation means the addition of oxygen rather than the loss of electrons.
Remember that oxidation involves the loss of electrons, while reduction involves the gain of electrons. In the context of a hydrogen fuel cell, hydrogen is oxidized as it loses electrons to form water.
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