C-08-Q214mediumsingle_mcqOxidation half-reaction in a Daniell cell:aZn→ZnX2++2 eX−\ce{Zn -> Zn^2+ + 2e-}ZnZnX2++2eXbCuX2++2 eX−→Cu\ce{Cu^2+ + 2e- -> Cu}CuX2++2eXcZnX2++2 eX−→Zn\ce{Zn^2+ + 2e- -> Zn}ZnX2++2eXdCu→CuX2++2 eX−\ce{Cu -> Cu^2+ + 2e-}CuCu