CH-1709
Electrolysis of solutions
Chemistry · Secondary 4 · Easy · Electrolysis of solutions
An aqueous solution contains only zinc ions and copper(II) ions. It is electrolysed using inert graphite electrodes.
Which observation is correct after electrolysis for a few minutes?
Which observation is correct after electrolysis for a few minutes?
- Colourless gas bubbles form at the cathode only
- The solution turns colourless
- A brown solid forms on the cathode and the blue colour fades
- The anode increases in mass as copper forms on it
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