AriaStar AriaStar 16-12-2016 Chemistry contestada A cell is built using two electrodes: What reaction occurs at the cathode? Al3+ + 3e —> Al E° = -1.66V Cu2+ + 2e —> Cu E° = +0.34V a. Cu —> Cu2+ + 2e- b. Cu2+ + 2e- —> Cu c. Al3+ + 3e- —> Al d. Al —> Al3+ + 3e-
