Aqueous copper sulphate, carbon electrodes.?

Question

Also got this wrong in the quiz. What's the inoic equation for the reaction at the cathode? The ions in the solution are: Cu[+2], SO4[-2], H[+], OH[-] all aqueous. I put 2H+ + 2 electrons gives us H2.

Answer 1

At the negative electrode, both copper ions and hydrogen ions are attracted, but it is the copper ions which are discharged, because they are easier to reduce:

Cu2+ + 2e- ------> Cu