Part A) Use the list of reduction potentials provided to determine Ered° based on Sn2+/Sn=0.0V for each of the cells measured: (What do you have to add OR subtract from Ered° for Sn2+/Sn based on S.H.E. to make its value = 0?)
Ag1+/Ag , Co2+/Co , Cu2+/Cu , Cd2+/Cd , Cr3+/Cr , Sn2+/Sn .
Part B) What is the spontaneous overall reaction that involves Co2+/Co and Cr3+/Cr? (write it both as a shorthand notation and as a balanced overall reaction)
What is the overall potential for the above reaction based on Sn2+/Sn=0.0V?
What is its overall potential for the above reaction based on H+/H2 =0.0 V?
strong oxidizing agents Standard Reduction Potentials at 298K, 1M, 1atm HALF-REACTION E° (V) Fag) + 2e → 2 F (₂) +2.87 O + 2H*(a) +2e → 02 + H₂O +2.07 Co +eCo²+ (aq) (aq) +1.82 +1.77 H₂O2 + 2Ho +2e → 2 H₂O PbO20)+4 +2 e-PbSO4) + 2 H₂O +1.70 *(K) H*+SO4 +e→Ce³(aq) MnO4 (aq) +8 H*(aq) +5 e Aut)+3e → AU Ce (aq) +1 61 Mr-4 H₂O) +1.51 +1.50 Cla) +2 e 2 CT() +1.36 +1 33 Cr₂O7² (aq) + 14 H*) +6 e 2 Cr³q) + 7 H₂O +2 e Mn² + 2H₂Om MnO2)+4 H*). +1 23 O2 +4 H+4 e→→ 2 H₂O +1.23 Br2+2 e 2 Br*(aq) +1.07 NO3(aq) + 4H+ (aq) + 3 e→NO) + 2 H₂O +0.96 2 Hg2+ +2e → Hg₂²¹0) 2+ +0.92 (aq) 2+ +0.85 Hg₂+ + 2 e 2 H Ag+ e. Ag Fe³+ → Fe²+ (aq) +0.80 +0.77 O2) + 2 H*) 2e → H₂O₂(aq) +0.68 MnO4 (aq) + 2 H₂O +3 e→MnO) +4 OH*(a) +0.59 12() +2e → 2 (4) +0.53 +0.40 O2(g) + 2 H₂O + 4e→ 4 OH' Cu²(aq) +2 e→→ Cu(s) AgCl) + e → Ag(s) + Cl (9) +0.34 +0.22 SO4(q) + 4 H*+2 e SO₂ + 2H₂O0 +0 20 Cu2+ +eCu (aq) +0.15 Sn +2e → Sn²(a) (aq) +0.13 2H*(*) (aq) 0.00 Pb²+ -0.13 Sn² (74) -0.14 NI2+ -0.25 +2e → H₂(g) +2e → Pb) +2e → Sn() +2e → Nl) (a) +2 eCOG) PbSO4)+2e → Pb) + SO₂²00 (+2E→→ Cd) +2e → Fe(s) Cr³+ +3e →> Cros) Co² -0.28 -0.31 Cd²+ -0.40 Fe²+ (04) -0.44 (aq) -0.74 Zn²+ (aq) +2 €→→ Zn -0.76 2H₂O2 eH₂+2 OH -0.83 Mn²4 (4) +20M -1.18 -1.66 +3e → A) +2 e → Be() -1.85 AP Be (aq) (aq) strong re
S MnO2) +4 H*(aq) + 2 e Mn²a) + 2 H₂Om O200) +4 H*(a) +4 e Br20) +2 e 2 Br*(aq) 2 H₂O2 NO3(aq) + 4H+ (aq) + 3 e→NO) + 2 H₂O) 2 Hg) +2e → Hg₂ (aq) 2+ Hg₂+ + 2e → 2 Ham 2+ Ag (aq) Fe³+ (aq) + e +e → Ag Fe²+ (aq) O2(g) + 2 H+ (aq) 2 e → H₂O2(aq) MnO4 (aq) + 2 H₂O) + 3 e → MnO2) +4 OH (39) 12(s) + 2e → 2 (aq) O29) + 2 H₂O +4e4 OH(aq) Cu²(aq) + 2e →→ Cu(s) AgCl) + e → Ag(s) + Cl (sq) SO4 (aq) +4 H*(aq) + 2 e SO2(g) + 2 H₂O0) Cu²+ +eCut (aq) Sn 2H* (34) (aq) +2e → Sn² (aq) +2 e* → H₂(g) Pb(s) Pb²+ →>>> (aq) + 2 e → Sn²)+2 e→→ Sn() N12+ +2e → NI) CO²) (aq) + 2e →→ CO(s) PbSO4)+2 e → Pb(s) + SO4²) Cd2+ () +2e → Cd) Fe²+ (aq) + 2 e Fe(s) ->>> Cr³+ + 3 e → Cr(s) (aq) Zn²+ (aq) +2 e→→ Zn(s) (૧) 2 H₂O +2 eH₂ + 2 OH Mn²+ + 2 € → M (89) AP+ +3e → Ak Bez) (aq) +2e →→ Be(s) Mg2+q) + 2e → Mg(s) (aq) Nat (aq) +e → Na(s) Ca²+ +2e → ca() (aq) Sr²(aq) + 2 e S[(s) Ba2+ +2e → Ba(s) (aq) K* (aq) + e* → K(s) LI*(aq) + e*→→L) +1 23 +1.23 +1.07 +0.96 +0.92 +0.85 +0.80 +0.77 +0.68 +0.59 +0.53 +0.40 +0.34 +0.22 +0.20 +0.15 +0.13 0.00 -0.13 -0.14 -0.25 -0.28 -0.31 -0.40 -0.44 -0.74 -0.76 -0.83 -1.18 -1.66 -1.85 -2.37 -2.71 -2.87 -2.89 -2.90 -2.93 -3.05 strong reducing agents
Part A) Use the list of reduction potentials provided to determine Ered° based on Sn2+/Sn=0.0V for each of the cells mea
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