You must estimate E° for the half-cell reaction In³⁺(aq) + 3 e¯ → In(s). You have no electrical equipment, but you do have all of the metals listed in Table 19.1 and aqueous solutions of their ions, as well as In(s) and In³⁺(aq). Describe the experiments you would perform and the accuracy you would expect in your result.

Table 19.1

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TABLE 19.1 Standard Reduction Potentials at 298.15 K and 1 atma Reduction Half-Cell Reaction Acidic solution F₂(g) + 2 e 2 F (aq) O3(g) + 2 H¹ (aq) + 2 e 0₂(g) + H₂O(1) S₂O² (aq) + 2 e 2 SO4²(aq) H,Oz(aq) + 2H*(aq) +2e <2H,O(1) Ce+ (aq) + Ce³+ (aq) MnO₂ (aq) + 4H*(aq) + 3 e¯ ⇒ MnO₂(s) + 2 H₂O(1) PbO₂(s) + SO² (aq) + 4H+ (aq) + 2e — PbSO(s) + 2 H₂O(1) Cl₂(g) + 2 e 2 Cl(aq) Cr₂O7² (aq) + 14 H*(aq) + 6 e¯ — 2 Cr³+ (aq) + 7 H₂O(1) MnO2 (s) + 4H* (aq) + 2 e Mn²+ (aq) + 2 H₂O(1) O₂(g) + 4H+ (aq) + 4 e 2 H₂O(1) IO3(aq) + 12 H+ (aq) + 10 e Br₂(1) + 2 e 2 Br NO3 (aq) + 4 H(aq) + 3 e Ag¹(aq) + e Ag(s) Zn(s) Al(s) = Mg(s) Fe³+ (aq) + e Fe²+ (aq) Oz(g) +2H*(aq) +2e