CH-1753
Electrolysis of solutions
Chemistry · Secondary 4 · Medium · Electrolysis of solutions
Aqueous copper(II) sulfate is electrolysed using inert electrodes.
Which change correctly describes what happens at the cathode (negative electrode)?
Which change correctly describes what happens at the cathode (negative electrode)?
- Copper(II) ions gain electrons to form copper metal.
- Copper(II) ions lose electrons to form copper metal.
- Water molecules gain electrons to form oxygen gas.
- Sulfate ions gain electrons to form sulfur dioxide gas.
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