A metal object is being electroplated with copper. One electrode is the metal object and the other electrode is made of copper. The electrolyte used is aqueous copper(II) sulfate. Which row gives the ionic half-equation for the reaction at the anode and the observation of the electrolyte?
- A$\text{Cu}^{2+} + 2e^- \rightarrow \text{Cu}$, blue colour fades
- B$\text{Cu}^{2+} + 2e^- \rightarrow \text{Cu}$, blue colour does not change
- C$\text{Cu} \rightarrow \text{Cu}^{2+} + 2e^-$, blue colour fades
- D$\text{Cu} \rightarrow \text{Cu}^{2+} + 2e^-$, blue colour does not change