The diagram below represents a set up that can be used to electrolyze aqueous copper (II) sulphate.

      

The diagram below represents a set up that can be used to electrolyze aqueous copper (II) sulphate.
31oxygen42420171206.jpg
i) describe s how oxygen gas is produced during the electrolysis.
ii) Explain why copper electrodes are not suitable for this electrolysis.

  

Answers


John
i) Hydroxide ions (OH-) migrate to the anode. OH- are discharged to form oxygen according to the equation below

$4OH_{(aq)}^- \rightarrow 2H_2O_{(l)} + O_{2(g)} + 4e^-$

ii) Copper anode would dissolve to give copper ions (CU2+)

johnmulu answered the question on May 15, 2017 at 08:47


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