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Electrolysis – Parts of an electrolytic cell
Electrolysis is the process of using electricity to break down or decompose a compound (usually an ionic compound in the molten state or in aqueous solution)
Electrolysis is carried out in an electrolytic cell.
Parts of an electrolytic cell:
Parts of an electrolytic cell:
Battery
Draws electrons away from anode.
Electrons enter the positive terminal of battery and leave from the negative terminal.
Electrons are supplied to the cathode, which becomes negatively charged.
Electrolyte
An electrolyte is a molten ionic compound or an aqueous solution that can be decomposed by an electric current to form cations and anions.
Contains mobile ions, hence allow electricity to flow through.
Substances that do not conduct electricity under any condition are called non-electrolyte.
Example: Sulfur, sugar, distilled water, organic compounds.
Electrodes
Electrodes conduct electricity.
Electrodes connected to the positive terminal of the battery is called the anode.
Electrodes connected to the negative terminal of the battery is called the cathode.
Usually carbon (graphite) rods or metal plates.
Inert electrodes do not affect the type of product produced at the electrode.
Examples of inert electrodes: platinum, carbon (graphite)
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