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A cell that consists of an Ni, NiSO4(aq) half-cell, Al, AlCl3(aq), half-cell, and a salt bridge. For a Ni2+(aq) + 2e- → NI aat 25oC, Eo = -0.28 V. FOr Al3+(aq) +3e- → Al at 25oC, Eo = -1.66 V.