1. The standard electrode potential for the reduction of U4+(aq) to U3+(aq) is −0.52 V.
Use the data in the table below to determine which of the following is capable of
reducing U4+(aq) to U3+(aq) under standard conditions.
Reduction half-reaction Eo, V F2(g) + 2 e− → 2 F−(aq) +2.866 Ag2+(aq) + e− → Ag+(aq) +1.98 Au3+(aq) + 3 e− → Au(s) +1.52 Cl2(g) + 2 e− → 2 Cl−(aq) +1.358 Br2(l) + 2 e− → 2 Br−(aq) +1.065 Hg2+(aq) + 2 e− → Hg(l) +0.854 MnO4−(aq) + e− → MnO42−
+0.56
(aq)
Cu2+(aq) + 2 e− → Cu(s) +0.340 AgCl(s) + e− → Ag(s) + Cl−
+0.2223
(aq)
Sn4+(aq) + 2 e− → Sn2+(aq) +0.154 (a) Br−(aq)
(b) Au(s)
(c) Cl−(aq)
(d) H2(g)
(e) Zn(s) 2 H+(aq) + 2 e− → H2(g) 0 Pb2+(aq) + 2e− → Pb(s) −0.125 V3+(aq) + e− → V2+(aq) −0.255 Co2+(aq) + 2 e− → Co(s) −0.277 PbSO4(s) + 2 e− → Pb(s) +
SO42−(aq) −0.356 Cr3+(aq) + e− → Cr2+(aq) −0.424 Zn2+(aq) + 2 e− → Zn(s) −0.763 Cr2+(aq) + 2 e− → Cr(s) −0.90 Mn2+(aq) + 2 e− → Mn(s) −1.18 Mg2+(aq) + 2 e− → Mg(s) −2.356 Sr2+(aq) + 2 e− → Sr(s) −2.89 (f) Ag(s) + Cl−(aq) 2. The standard electrode potential for the reduction of Re3+(aq) to Re(s) is +0.300 V.
Use the data in the table below to determine which of the following is capable of
reducing Re3+(aq) to Re(s) under standard state conditions. (a) Cl−(aq)
(b) F−(aq)
(c) Ag+(aq)
(d) Hg(l) Reduction half-reaction Eo, V F2(g) + 2 e− → 2 F−(aq) +2.866 Ag2+(aq) + e− → Ag+(aq) +1.98 Au3+(aq) + 3 e− → Au(s) +1.52 Cl2(g) + 2 e− → 2 Cl−(aq) +1.358 Br2(l) + 2 e− → 2 Br−(aq) +1.065 Hg2+(aq) + 2 e− → Hg(l) +0.854 MnO4−(aq) + e− → MnO42−(aq) +0.56 Cu2+(aq) + 2 e− → Cu(s) +0.340 AgCl(s) + e− → Ag(s) + Cl−(aq) +0.2223 Sn4+(aq) + 2 e− → Sn2+(aq) +0.154 2 H+(aq) + 2 e− → H2(g) 0 Pb2+(aq) + 2e− → Pb(s) −0.125 V3+(aq) + e− → V2+(aq) −0.255 Co2+(aq) + 2 e− → Co(s) −0.277 PbSO4(s) + 2 e− → Pb(s) + SO42−(aq) −0.356 Cr3+(aq) + e− → Cr2+(aq) −0.424 Zn2+(aq) + 2 e− → Zn(s) −0.763 Cr2+(aq) + 2 e− → Cr(s) −0.90 Mn2+(aq) + 2 e− → Mn(s) −1.18 Mg2+(aq) + 2 e− → Mg(s) −2.356 Sr2+(aq) + 2 e− → Sr(s) −2.89 (e) Cr(s)
(f) Co(s) 3. The standard electrode potential for the reduction of Eu3+(aq) to Eu2+(aq) is
−0.43 V. Use the data in Appendix D to determine which of the following is capable of
reducing Eu3+(aq) to Eu2+(aq) under standard state conditions?
(a) Sn2+(aq)
(b) La(s)
(c) HCN(aq)
(d) ln(s) 4. Determine E°cell for each of the following voltaic cells:
Enter your answer with 3 significant digits.
Enter scientific notation as 1.23E4.
Click here to view Appendix D-4.
(a) Br2(l) is reduced to Br− (aq) and Ag(s) is oxidized to Ag+(aq).
____________
(b) Cu2+(aq) is reduced by Zn(s).
____________
(c) MgCl2(aq) is produced from Mg(s) and Cl2(g).
____________ Appendix D-4.

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