An autonomous underwater vehicle (AUV) is being designed to map the ocean floor over long-endurance missions.
Engineers are deciding whether to power the AUV using hydrogen-oxygen fuel cells or rechargeable chemical cells (such as lithium-ion batteries).
The reaction that takes place in a fuel cell is:
hydrogen+oxygen→water \text{hydrogen} + \text{oxygen} \rightarrow \text{water} hydrogen+oxygen→waterEvaluate the advantages and disadvantages of using hydrogen-oxygen fuel cells rather than rechargeable chemical cells to power this underwater vehicle.
42 exam-style questions on Edexcel GCSE Chemistry 6.4 Chemical cells and fuel cells, covering 6.4.1 Chemical cells and fuel cells. Each one has a worked solution and a mark scheme showing where the marks go.