Consider the following half-reactions:
IrCl63- + 3e- → Ir + 6Cl - ε° = 0.77 V
PtCl42- + 2e- → Pt + 4Cl - ε° = 0.73 V
PdCl42- + 2e- →Pd + 4Cl - ε° = 0.62 V
A hydrochloric acid solution contains platinum, palladium, and iridium as chloro-complex ions. The solution is a constant 1.0 M in chloride ion and 0.020 M in each complex ion. Is it feasible to separate the three metals from this solution by electrolysis? (Assume that 99% of a metal must be plated out before another metal begins to plate out.)
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Our data indicates that this problem or a close variation was asked in Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition. You can also practice Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition practice problems.