Chemistry unit 5 Electrolysis

Electrolysis breaks down compounds into simpler substances.
It is used in industrial processes.
Ionic substances are decomposed by an electrical charge being passed through them during electrolysis.
The ions must be free to move for this to work so the compound must be molten.
When sodium chloride is dissolved in water, hydrogen and hydroxide ions are present as well as the sodium and choride ions.
The ion which is selected to discharge at an electrode depends on a number of factors.
The position of the ion in the electrochemical series affects its ease of discharge at an electrode.
When metals react, they lose electrons to become positive ions.
If a metal is placed…

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