Question

Standard potentials are measured against the standard hydrogen electrode (SHE). Because it is not always convenient to use a S. H. E., often other reference electrodes are used. The saturated calomel electrode (S.?.?.) is one commonly used reference electrode, with a potential of +0.242 V versus the SHE. Using a table of standard reductions, determine what the potential of each reduction below would be versus the S.C.E. Number a) Cu2+ (aq) + 2e Cu(s) E Number b) AI (aq)+3e

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Answer - Detailed solution in the attached photo.

A] E* = 0.10 V

B]   E* = 1.90 VThe Halt-Reaction SCE is, Esce = 6.142 Patentiel, e nd E。(col thyus pect to sce), yese, the tu, a etudans au reduction . o a

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