Chemistry 5070 · O Level · Electrolysis

Electrolysis — practice question

Aluminium is produced by electrolysing molten aluminium oxide. Which row identifies the electrode where aluminium is produced and gives the correct equation for how it is formed?

  • Aanode, $\text{Al}^{3+} + 3e^- \rightarrow \text{Al}$
  • Banode, $\text{Al}^{3+} - 3e^- \rightarrow \text{Al}$
  • Ccathode, $\text{Al}^{3+} + 3e^- \rightarrow \text{Al}$
  • Dcathode, $\text{Al}^{3+} - 3e^- \rightarrow \text{Al}$

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