1.

For the cell, Zn (s) |Zn2+) (aq)||Mx+)(aq)|M(s), different half cells and their standard electrode potentials are given below.Mx+(aq)/M(s)Au3+(aq)/Au(s)Ag+(aq) /Ag(s)Fe3+(aq)/Fe2+ (s)Fe2+(aq) /Fe(s)\({E^o}_{{M^{{\rm{x}} + }}/M}/V\)1.400.800.77-0.44If \(E{^\circ _{Z{n^{2 + }}/Zn\;}} - 0.76V\), which cathode will give a maximum value of \(E{^\circ _{cell}}\;\) per electron transferred?

A. \(\frac{{A{g^ + }}}{{Ag}}\)
B. \(\frac{{F{e^ + }}}{{Fe}}\)
C. \(\frac{{A{u^{3 + }}}}{{Au}}\)
D. \(\frac{{F{e^{3 + }}}}{{F{e^{2 + }}}}\)
Answer» D. \(\frac{{F{e^{3 + }}}}{{F{e^{2 + }}}}\)


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