ElectrochemistryHard
Question
To perform an analysis of a mixture of metal ions by electro-deposition, the second metal to be deposited must not being plating out until the concentration ratio of the second to the first is about 106. What must be the minimum difference in standard potential of the two metals which form dipositive ions in order for such an analysis to be feasible?
Options
A.0.177 V
B.0.354 V
C.0.708 V
D.0.088 V
Solution
$\Delta E^{o} = \frac{0.059}{2}.\log 10^{6} = 0.177\text{ V}$
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