CH-1706
Electrolysis of solutions
Chemistry · Secondary 4 · Medium · Electrolysis of solutions
An aqueous solution of zinc nitrate is electrolysed using inert graphite electrodes. Which observation is correct after electrolysis has been carried out for some time?
- A grey deposit of zinc forms at the cathode.
- Colourless gas bubbles form at both electrodes.
- The solution slowly turns blue in colour.
- The anode increases in mass as zinc is deposited.
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