Chemistry › Section Q · Electrochemistry › Topic Q.2
Galvanic cells
Drop zinc into copper sulfate solution and the reaction simply warms the beaker. Separate the two halves of that reaction and connect them with a wire, and the same electron transfer becomes an electric current you can use.
In this topic
- Heat or electricity?
- Half-cells and electrochemical cells
- Anode and cathode
- The salt bridge
- Worked example: describing a zinc and copper cell
- Cell notation
- Inert electrodes
- Worked example: from a reaction to cell notation
- Reading notation back into a reaction
- Common mistakes to avoid
- Key takeaways
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