Assemble a battery, represented by the diagram below, with Ni 2+ /Ni and Fe 2+ /

Question

Assemble a battery, represented by the diagram below, with Ni2+/Ni and Fe2+/Fe couples in which the voltage reads positive. Use the Standard Reduction Potentials Table below. (Use the lowest possible coefficients. Omit states-of-matter from your answer.)

(a) What half-reaction occurs in compartment A?

__________________________
(b) What half-reaction occurs in compartment B?

__________________________
(c) Write the net redox reaction.

__________________________

(d) What is the cell potential?
_________ V

.

SRP Table:

Explanation / Answer

For positive potential,

(a) Anodic reaction Fe = Fe2+ + 2e-

(b) Cathodic recation Ni2+ + 2e- = Ni

(c) net redox recation Fe + Ni2+ = Fe2+ + Ni

(d) cell potential = Ecathode - E anode = -0.23 - (-0.44) = 0.21

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