C-08-Q244mediumsingle_mcqAnode reaction in a dry cell:aZn→ZnX2++2 eX−\ce{Zn -> Zn^2+ + 2e-}ZnZnX2++2eX−bZnX2++2 eX−→Zn\ce{Zn^2+ + 2e- -> Zn}ZnX2++2eX−ZncCu→CuX2++2 eX−\ce{Cu -> Cu^2+ + 2e-}CuCuX2++2eX−dMnX4++eX−→MnX3+\ce{Mn^4+ + e- -> Mn^3+}MnX4++eX−MnX3+