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ELECTROLYSIS REVISION




ELECTROLYSIS= the decomposition of a substance using electricity.



ELECTROLYTE= this is a compound that will ONLY conduct electricity when molten or when dissolved in
water. These compounds DO NOT conduct electricity when SOLID



ELECTRODES= carbon or metal rods that dip into the electrolyte to connect the circuit with…

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ELECTROLYSIS REVISION




Electrolysis only works with molten or dissolved ionic compounds because the IONS are free to
move.

THE HOFFMAN VOLTAMETER

(Electrolysing water)

Pure water is covalently bonded and unable to conduct electricity.
So to make the water conduct electricity we need to break down the water molecules, to do…

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ELECTROLYSIS REVISION




TYPICAL ELECTROLYSIS CELL




electricity= flow of electrons

Electrons are repelled by the negative terminal of the cell. The electrons travel along the
conductor and gather at the cathode.

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ELECTROLYSIS REVISION



PREDICTING THE PRODUCTS OF ELECTROLYSIS

At the negative electrode...

The negative electrode attracts positive ions-which gain electrons. This is
called REDUCTION (R.I.G) so we say ions have been reduced.
Because metal and hydrogen ions are positively charged, so whether
you get the metal or the hydrogen during electrolysis…

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