Electrolysis -...
Transcript of Electrolysis -...
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Electrolysis
• Electrolysis is the breakdown of an ionic compound, molten or in solution, by the passage of electricity through it.
• The substance which is decomposed is called the electrolyte.
• Electrolyte: The substance that conducts electricity when in the molten state or in solution.
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Electrodes
• Electric current enters and leaves the electrolyte through electrodes.
• These are made up of unreactive metals such as platinum or the non-metal carbon (Graphite).
• These are also known as inert electrodes.
• Cathode attract cations (+ vely charged ions) known as positive electrode.
• Anode attract anions (- vely charged ions) is known as negative electrode.
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How the transfer of charge occur during electrolysis?
• Movement of electrons in the electrodes.
• Removal and addition of electrons from the external circuit at the electrodes.
• Movement of ions in the electrolyte
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