These potentials indicate the relative thermodynamic
tendency for the indicated half-reaction to occur.
The oxidation of
zinc
is
more likely
than the oxidation of
iron
.
*
*
Zn <--> Zn
+2
+ 2 e
–
E = –0.763 volts
Fe <--> Fe
+2
+ 2 e
–
E =
–
0.409 volts