Electrolytic Cell (5)

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Electrolytic Cell (5)

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Concentration of Electrolyte (1)

The concentration of ions in an electrolyte also affects the selection of ion to be discharged

Concentration of Electrolyte (2)

Negative ions which are more concentrated in an electrolyte are more likely to be discharged at the anode

Concentration of Electrolyte (3)

The selection of positive ions to be discharged at the cathode is still influenced by the position of the positive ions in the electrochemical series

Ions that will be discharged if the metal used is the same as the metal ion in the electrolyte (1)

At the anode, the metal atoms will ionise to form positive ions that dissolve into the electrolyte

Ions that will be discharged if the metal used is the same as the metal ion in the electrolyte (2)

At the cathode, the metal ions will discharge to form atoms of the metal which are then deposited at the cathode

Ions that will be discharged if the metal used is the same as the metal ion in the electrolyte (3)

The concentration of metal ions in the electrolyte does not change because the rate of metal atoms ionised to form metal ions at the anode is the same as the rate of metal ions discharged

Ions that will be discharged if the type of substance used as the anode is not the same as the type of metal ion in the electrolyte (1)

- The atoms of the anode do not dissolve in the electrolyte - Negative ions in the electrolyte are discharged at the anode

Ions that will be discharged if the type of substance used as the anode is not the same as the type of metal ion in the electrolyte (2)

At the cathode, the less electropositive ion will be selected to be discharged

Applications of electrolysis in industries (1)

Extraction of metals

Applications of electrolysis in industries (2)

Purification of metals

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