WorksheetsElectrolysis
Total questions: 5
Worksheet time: 3mins
The diagram shows the results of an electrolysis experiment using inert electrodes.
Which could be liquid X?
aqueous copper(II) sulfate
concentrated aqueous sodium chloride
dilute sulfuric acid
ethanol
Which apparatus could be used to electroplate an iron nail with copper?
A
B
C
D
Cryolite, Na3AlF6, is added to aluminium oxide in the electrolytic extraction of aluminium.
What is the reason for this?
to decrease the melting point of the electrolyte
to protect the anodes
to produce more aluminium
to stop the aluminium reacting with air
Which statement about electrolysis is correct?
Electrons move through the electrolyte from the cathode to the anode.
Electrons move towards the cathode in the external circuit.
Negative ions move towards the anode in the external circuit.
Positive ions move through the electrolyte towards the anode during electrolysis.
Aluminium is extracted from bauxite by electrolysis.
Which row shows the anode material and the anode reaction?
A
B
C
D
