Mark Yourself Question
Write the cell notation for the voltaic (or galvanic) cell that incorporates the following redox reaction:
Al(s)+Cr(aq)3+→Al(aq)3++Cr(s)Al_{(s)}+Cr^{3+}_{(aq)} \to Al^{3+}_{(aq)}+Cr_{(s)}Al(s)+Cr(aq)3+→Al(aq)3++Cr(s)
Al3+ +3e -> Al(s) Eored=-1.66V
Cr3+ + 3e- -> Cr(s) Eored=-0.73V
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Write the cell notation for the voltaic cell that incorporates each of the following redox reactions:
Cu(aq)2++SO2(g)+2H2O(l)→Cu(s)+SO4(aq)2−+4H(aq)+Cu^{2+}_{(aq)}+SO_{2(g)}+2H_2O_{(l)} \to Cu_{(s)}+SO^{2-}_{4(aq)}+4H^+_{(aq)}Cu(aq)2++SO2(g)+2H2O(l)→Cu(s)+SO4(aq)2−+4H(aq)+
Electrochemistry: Galvanic Cells
Construct a galvanic cell with the highest voltage given the following half reactions. Determine the voltage produced and express it in standard cell notation.
Na(aq)++e−→Na(s)Eo=−2.71VNa^+_{(aq)} +e^- \to Na_{(s)} \hspace{40pt} E^o=-2.71VNa(aq)++e−→Na(s)Eo=−2.71V
S2O8(aq)2−+2e−→2SO4(aq)2−Eo=2.01VS_2O_{8(aq)}^{2-} +2e^- \to 2SO_{4(aq)}^{2-} \hspace{20pt} E^o=2.01VS2O8(aq)2−+2e−→2SO4(aq)2−Eo=2.01V
Practice: Galvanic Cells
Galvanic Cell Practice