Chemistry (AS Level)·Electrochemistry · NSSCAS 2.2.2
Electrolysis
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Electricity can force a reaction that would never happen on its own. Learn how charge is carried through an electrolytic cell, how selective discharge decides which ions react at each electrode, how to write ionic half-equations, and how electrolysis extracts metals like copper from leached solutions.
What you'll learn in this lesson
By the end you should be able to (NSSCAS Chemistry (AS Level) 2.2.2):
- Describe electrolysis as the conduction and decomposition of a molten or aqueous electrolyte
- Use selective discharge to identify electrode products of aqueous solutions
- Construct ionic half-equations for reactions at the cathode and anode
- Describe the transfer of charge (electrons in the wires, ions in the electrolyte)
- Describe the use of electrolysis to extract metals from acidic leached solutions (e.g. copper, manganese)
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