Answer to Question #216887 in Inorganic Chemistry for Nick

Question #216887

1.                                             Fe3+ + e- → Fe2+   Eo = +0.77 V

        Fe2+ + 2e- → Fe    Eo = -0.44 V

  •  Using the redox reactions of iron represented above, draw a potential diagram that summarizes the redox chemistry of iron in an aqueous solution
  • Calculate the value of E for the reduction of Fe3+(aq) to iron metal
1
Expert's answer
2021-07-14T05:05:27-0400


The first half-reaction represents the reduction of iron (III) to iron (II). The second half-reaction represents the reduction of iron (II) to iron metal. We can find the reduction potential of our desired reaction by adding these two half-reactions and eliminating common species on both sides. The reduction potential of our desired reaction will then be the sum of the reduction potentials of these two half-reactions.


=0.77−0.44 = 0.33V


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