Question detail
What is the overall 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. Oxidation of hydrogen to produce water
- B. Reduction of oxygen to produce hydrogen
- C. Combustion of hydrogen to produce steam
- D. Electrolysis of water to produce hydrogen
Answer
Oxidation of hydrogen to produce water
Explanation
The overall reaction in a hydrogen fuel cell involves the oxidation of hydrogen, which combines with oxygen to produce water.
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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