A field team has a used alkaline battery and a used rechargeable cell, both of which have stopped supplying electricity. The team can carry only one back to base, where an external current is available to restore a power source for the next survey.
Which power source should the team retain? Explain the different outcomes for the two power sources.
90 exam-style questions on AQA GCSE Chemistry 5.2 Chemical cells and fuel cells, covering 5.2.1 Cells and batteries, 5.2.2a Fuel cells, and 5.2.2b Half equations for hydrogen fuel cells. Each one has a worked solution and a mark scheme showing where the marks go.