K_sp for Ni(OH)₂ is 6.5 * 10^–18. Use this value and data from Appendix 2B to calculate E° for the half-reaction Ni(OH)₂(s) + 2 e^– → Ni(s) + 2 OH^–(aq).

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2B STANDARD POTENTIALS AT 25 °C Potentials in Electrochemical Order Reduction half-reaction Strongly oxidizing H4XeO6 + 2 H+ 2 e XeO3 + 3 H₂O F₂2 e 2 F- O3 + 2H+ + 2 e→O₂ + H₂O S₂O8² +2e → 2 SO4²- Ag²+ + e → Ag+ CO³+ +e Co²+ H₂O2 + 2 H+ 2e → 2 H₂O Aue Au Pb²+ Pb+ + 2 e 2 HCIO + 2 H+ 2 eCl₂ + 2 H₂O Cee Ce³+ →Mn²+ + 4H₂O 2 HBrO + 2 H+ + 2 e Br2 + 2 H₂O MnO4 + 8 H+ + 5 e Mn³+ + e→ Mn²+ Au³+ + 3 e →→ Au Cl₂ +2 e 2 CI Cr₂O7² + 14 H+ + 6 e 2 Cr³+ + 7 H₂O O3+ H₂O + 2e O₂ + 4 H+ + 4e →O₂+ 2 OH → 2 H₂O Eº/V +3.0 +2.87 +2.07 +2.05 +1.98 +1.81 +1.78 +1.69 +1.67 +1.63 +1.61 +1.60 +1.51 +1.51 +1.40 +1.36 +1.33 +1.24 +1.23 Reduction half-reaction NO3 + H₂O + 2e →NO₂+ 2 OH Ti + e Ti³+ 2 H+ + 2e Fe³+ + 3 e → H₂ Fe O₂ + H₂O + 2e →HO₂ + OH Pb²+ + 2 e Pb In e In Sn²+ + 2 e Sn Agle → Ag + I Ni²+ + 2e → Ni V³+ + e → V²+ Co²+ +2e In³+ + 3 e Tl + e PbSO4 + 2e Ti³+ + e In²+ + e→→ Cd²+ + 2 e Cr³+e Fe²+ + 2 e → Co In Tl →→ Pb+ SO4²- Ti²+ In+ Cd Cr²+ Fe Eº/V +0.01 0.00 0, by definition -0.04 -0.08 -0.13 -0.14 -0.14 -0.15 -0.23 -0.26 -0.28 -0.34 -0.34 -0.36 -0.37 -0.40 -0.40 -0.41 -0.44