Which of the following oxidation-reduction reactions will be spontaneous in the direction written? Select all that apply.Group of answer choicesPb2+ (aq) + Fe (s) → Pb (s) + Fe2+ (aq)Zn2+ (aq) + Cu (s) → Zn (s) + Cu2+ (aq)Pb2+ (aq) + Cu (s) → Pb (s) + Cu2+ (aq)Hg2+ (aq) + Cu (s) → Hg (l) + Cu2+ (aq)Mg2+ (aq) + Be (s) → Mg (s) + Be2+ (aq)
