Electrolysis
98 past-paper questions on Electrolysis · examined 2020–2025.
20258 questions
12 Electrolysis is used to plate a metal statue with silver. The statue is an electrode in a suitable electrolyte. Which row is correct? statue electrolyte A cathode AgC l (aq) B cathode AgNO3(aq) C anode AgC l (aq) D anode AgNO3(aq)
Which statement about electrolysis is correct?
The diagram shows an electrolysis experiment using inert electrodes. Which row shows what happens to the concentration of the electrolyte in L and in M as the electrolysis proceeds?
The apparatus shown is used to investigate the electrolysis using inert electrodes of dilute sulfuric acid and concentrated aqueous sodium chloride in separate experiments. Which row shows the ratio of volume of gas collected in each test-tube?
The apparatus shown is used to investigate the electrolysis using inert electrodes of dilute sulfuric acid and concentrated aqueous sodium chloride in separate experiments. Which row shows the ratio of volume of gas collected in each test-tube?
The diagram shows the electrolysis of molten lead bromide with inert electrodes. Which row identifies the particles that carry charge along each arrow?
What are the products formed at the two electrodes when aqueous copper(II) sulfate is electrolysed using copper electrodes?
State one other property of graphite that makes it suitable for use as an electrode during electrolysis.
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