A galvanic cell is constructed by wiring a zinc electrode bathed in 1.0 m zn2 (aq) to ________?
1) a copper electrode bathed in 1.0 M Cu²⁺ (aq)
2) a silver electrode bathed in 1.0 M Ag+ (aq)
3) a lead electrode bathed in 1.0 M Pb²⁺ (aq)
4) a nickel electrode bathed in 1.0 M Ni²⁺ (aq)