An engineering student is investigating the performance of simple chemical cells. They set up a series of cells using various metal electrodes immersed in a suitable electrolyte.
The metals available to the student are listed below in order of their reactivity:
Identify the two metal electrodes from the list that the student should select to generate the highest possible voltage.
State the reason for your choice in part (1).
If the student initially measures the cell voltage using iron and silver electrodes, and then replaces the iron electrode with tin, describe and explain the change in the measured voltage.
6 exam-style questions on AQA GCSE Chemistry 5.2 Chemical cells and fuel cells, covering 5.2.1 Cells and batteries and 5.2.2 Fuel cells. Each one has a worked solution and a mark scheme showing where the marks go.