Use Appendix 2B to determine whether an acidic sodium dichromate solution can oxidize

(a) Bromide ions to bromine and

(b) Silver (I) ions to silver(II) ions under standard conditions.

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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¯ 03 + 2 H+ + 2 e O2 + H₂O S2O8²2 e 2 SO4²- Ag²+ + e → Ag+ CO³+ +e→Co²+ H₂O2 + 2 H+ + 2 e 2 H₂O Aue Au Pb+ + 2 e Pb²+ 2 HCIO + 2 H+2 e→Cl₂ + 2 H₂O Cet + eCe³+ 2 HBrO + 2 H+ + 2 e Br2 + 2 H₂O MnO4 + 8 H+ + 5 e → Mn²+ + 4 H₂O Mn3³+ + e→→ Mn²+ Au³+ + 3 e → Au Cl₂ + 2e 2 Cl Cr₂O7² + 14 H O3 + H₂O + 2e O₂ + 4H+ + 4e + 6 e2 Cr³+ + 7 H₂O → 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 +1 23 Reduction half-reaction NO3 + H₂O + 2e →NO₂ + 2 OH¯ Ti + e →→ Ti³+ 2 H+ + 2e → H₂ Fe³++3 e Fe O₂ + H₂O + 2 e → HO₂ + OH Pb²+ 2 e Pb In + e →→ In Sn²+ + 2e → Sn Agle → Ag + I Ni²+ + 2e → Ni V³+ + € → V²+ Co²+ +2 e Co In³+ + 3 e → In TI+ + e → Tl PbSO4 + 2 e Pb + SO₂²2² Ti³+ + e Ti²+ In²+ + e → Int Cd²+ + 2 e Cr³+e Fe²+ + 2 e 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