Question

1) Suppose that gold and silver half-cells are suitably connected. Au+3 + 3e- --> Au(s) E° = +1.50 v Ag+ + 1e- --> Ag(s) E° = +0.80 v a.

i. indicate the cathode and anode half-reactions

ii. Write the overall cell reaction

iii. Calculate E° for the cell

b. Calculate ΔG° for the cell.

c. Calculate the equilibrium constant for the cell reaction at 25°C.

d. Calculate E for the cell if [Ag+] = 0.15 and [Au3+] = 0.75M

e. In a separate experiment, how many grams of gold can be plated onto a piece of jewelry if a 1.00M solution of gold (III) nitrate is suitably electrolyzed for 45 minutes at 2.50 amps?

Answer 1