Question detail
Explain why hydrogen fuel cells can be considered an alternative to rechargeable batteries.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Chemical cells and fuel cells (chemistry only)
Question
Explain why hydrogen fuel cells can be considered an alternative to rechargeable batteries.
Answer
Hydrogen fuel cells can be considered an alternative to rechargeable batteries because they provide a continuous supply of energy as long as hydrogen is available, and they produce only water as a byproduct, making them environmentally friendly. Additionally, they can be refueled quickly compared to recharging batteries.
Explanation
This question assesses the student's ability to analyze the advantages of hydrogen fuel cells over rechargeable batteries. It encourages critical thinking about energy sources and their environmental impact.
Common mistake
Misunderstanding fuel supply in fuel cells
Students often think a fuel cell needs a continuous external supply of oxygen and water, just like a battery needs a continuous supply of reactants
Explain that a fuel cell requires only the fuel (e.g. hydrogen) and an oxidiser (usually oxygen from air); water is a product, not a required input, and the cell can operate as long as fuel and oxygen are available
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