Avoltaic cell consists of a nickel electrode in a solution containing ni2+ ions, and a copper electrode in a solution containing cu2+ ions. which is the cell potential? a. e subscript c e l l space end subscript superscript 0 space end superscript equals minus 0.59 v b. e subscript c e l l space end subscript superscript 0 space end superscript equals plus 0.59 v c. e subscript c e l l space end subscript superscript 0 space end superscript equals minus 0.09 v d. e subscript c e l l space end subscript superscript 0 space end superscript equals plus 0.09 v