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4. *For the unbalanced reaction Fe3+(aq) +I-(aq) → Fe²*(aq) + I2(s) Balance the reaction and label the oxidation and reduction half reactions. b. Identify the anode and cathode c. What is the oxidizing agent? The reducing agent? d. Using the table of standard reduction potentials, calculate E° for this cell.

4. *For the unbalanced reaction Fe3+(aq) +I-(aq) → Fe²*(aq) + I2(s) Balance the reaction and label the oxidation and reduction half reactions. b. Identify the anode and cathode c. What is the oxidizing agent? The reducing agent? d. Using the table of standard reduction potentials, calculate E° for this cell.

Chemistry: Matter and Change
Chemistry: Matter and Change
1st Edition
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Chapter20: Electrochemistry
Section: Chapter Questions
Problem 81A
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Half-Reaction E"(V) Half-Reaction E(V) Ag *(aq) + e AgBr(s) + e AgCI(s) + e Ag(CN), (aq) + e¯ Ag,CrO,(s) + 2 e AgI(s) + e - Ag(s) Ag(s) + Br (ag) Ag(s) + CI"(ag) 2 H,0(1) + 2 e HO, (ag) + H,0(1) + 2 e - 3 OH (ag) H,O,(aq) + 2 H*(aq) + 2 e - Hg,2* (ag) + 2 e- 2 Hg* (aq) + 2 e Hg**(aq) + 2 e I(s) + 2 e +0.799 H2(g) + 2 OH (aq) - -0.83 +0.095 +0.88 > +0.222 2 H;O(1) +1.776 Ag(s) + 2 CN (aq) -0.31 2 Hg(1) Hg,2+ (aq) Hg() 21 (aq) -> +0.789 2 Ag(s) + Cro, (ag) - +0.446 w +0.920 Ag(s) + 1(aq) Ag(S,O3)2 (aq) + e → Al* (ag) vt 3 e Al(s) H3ASO4(aq) + 2 H* (ag) + 2 e - -0.151 +0.854 Ag(s) + 2 S,0,"(aq) +0.01 +0.536 -1.66 2 10; (aq) + 12 H*(aq) + 10 e +1.195 +0.559 12(s) + 6 H2O() H3ASO;(ag) + H,0(1) K*(aq) + e Li*(ag) + e Mg?*(ag) + 2 e- Mn2+ (aq) + 2 e“ K(s) Ba2+ (aq) + 2 e Bio* (aq) + 2 H* (aq) + 3 e- Br2(1) + 2 e - 2 Br (aq) 2 Bro; (ag) + 12 H*(aq) + 10 e - -2.925 Ba(s) -2.90 Bi(s) + H2O(1) Li(s) -3.05 +0.32 +1.065 Mg(s) -2.37 +1.52 » Mn(s) -1.18 MnO;(s) + 4 H*(aq) + 2 e- Brz(1) + 6 H2O(1) H2C,O4(ag) +1.23 > Mn*(aq) + 2 H;0() 2 CO:(g) + 2 H* (aq) + 2e → Ca2+ (aq) + 2 e Cd2+(aq) + 2 e Ce*+(aq) + e → Cl(g) + 2 e" - 2 CI (ag) 2 HCIO(ag) + 2 н*(аq) + 2 е -0.49 MnO4 (aq) + 8 H* (aq) + 5 e --→ Ca(s) Cd(s) Ce* (aq) - -2.87 +1.51 Mn?*(ag) + 4 H;O() -0.403 Mno, (ag) + 2 H,O(1) + 3 e +0.59 +1.61 MnO2(s) + 4 OH"(aq) +1.359 HNO,(aq) + H* (aq) + e" N2(g) + 4 H20(!) + 4e NO(g) + H2O(1) 4 OH (aq) + N,H4(aq) N,H3*(aq) +1.63 +1.00 Cl2(g) + 2 H2O(I) -1.16 CIO (aq) + H,O(1) + 2 e N2(g) + 5 H* (ag) + 4 e NO, (aq) + 4 H* (aq) + 3 e --→ NO(g) + 2 H,O() Na* (ag) + e – Na(s) Ni?* (aq) + 2 e Oz(g) + 4 H*(aq) + 4e Oz(g) + 2 H;O(I) + 4 e 4 OH (aq) O,(g) + 2 H* (ag) + 2e O3lg) + 2 H*(aq) + 2 e Pb* (aq) + 2 e Pb(s) PbO2(s) + HSO, (aq) + 3 H*(aq) + 2 e +0.89 -0.23 CI (ag) + 2 OH (aq) +0.96 2 ClO, (ag) + 12 H* (aq) + 10 e +1.47 -2.71 Cl2(g) + 6 H20(1) - Ni(s) -0.28 Co2+(aq) + 2 e Co(s) Co+ (aq) + e Co2+(aq) Cr*(aq) + 3 e" Cr*(ag) + e Cro,"(aq) + 14 H*(aq) + 6 e - -0.277 2 H,O(1) +1.23 +1.842 +0.40 H;O2(aq) O,(g) + H,0() - Cr(s) -0.74 +0.68 Cr* (aq) +2.07 -0.41 +1.33 -0.126 2 Cr* (aq) + 7 H,0(1) +1.685 Cro,"(aq) + 4 H;O() + 3e - PbSO,(s) + 2 H0(1) Pb(s) + HSO, (aq) -0.13 Cr(OH)3(s) + 5 OH (aq) PbSO,(s) + H*(aq) + 2 e PtCl (aq) + 2 e S(s) + 2 H*(aq) + 2 e H,SO3(ag) + 4 H*(aq) + 4 e - S(s) + 3 H2O(1) HSO, (aq) + 3 H*(aq) + 2 e -0.356 Cu?*(ag) + 2 e Cu(s) Cu2* (ag) + e - Cu* (aq) Cu*(aq) + e Cul(s) + e +0.337 Pt(s) + 4 CI (aq) +0.73 +0.153 H,S(g) +0.141 - Cu(s) - Cu(s) + I (aq) 2 F(aq) +0.521 +0.45 -0.185 +0.17 F2(g) + 2 e Fe*(ag) + 2 e Fe*(ag) + e → Fe(CN), (aq) + e 2 H* (ag) + 2 e → - +2.87 H2SO3(aq) + H,0(1) Sn²*(aq) + 2 e Sn** (aq) + 2 e-→ VO," (ag) + 2 H*(aq) + e Zn2+(aq) + 2 e Fe(s) -0.440 Sn(s) --0.136 Fe2* (aq) Fe(CN), (aq) +0.771 Sn²* (aq) +0.154 +0.36 vo* (ag) + H,O(1) +1.00 H;(g) 0.000 Zn(s) -0.763
Transcribed Image Text:Half-Reaction E"(V) Half-Reaction E(V) Ag *(aq) + e AgBr(s) + e AgCI(s) + e Ag(CN), (aq) + e¯ Ag,CrO,(s) + 2 e AgI(s) + e - Ag(s) Ag(s) + Br (ag) Ag(s) + CI"(ag) 2 H,0(1) + 2 e HO, (ag) + H,0(1) + 2 e - 3 OH (ag) H,O,(aq) + 2 H*(aq) + 2 e - Hg,2* (ag) + 2 e- 2 Hg* (aq) + 2 e Hg**(aq) + 2 e I(s) + 2 e +0.799 H2(g) + 2 OH (aq) - -0.83 +0.095 +0.88 > +0.222 2 H;O(1) +1.776 Ag(s) + 2 CN (aq) -0.31 2 Hg(1) Hg,2+ (aq) Hg() 21 (aq) -> +0.789 2 Ag(s) + Cro, (ag) - +0.446 w +0.920 Ag(s) + 1(aq) Ag(S,O3)2 (aq) + e → Al* (ag) vt 3 e Al(s) H3ASO4(aq) + 2 H* (ag) + 2 e - -0.151 +0.854 Ag(s) + 2 S,0,"(aq) +0.01 +0.536 -1.66 2 10; (aq) + 12 H*(aq) + 10 e +1.195 +0.559 12(s) + 6 H2O() H3ASO;(ag) + H,0(1) K*(aq) + e Li*(ag) + e Mg?*(ag) + 2 e- Mn2+ (aq) + 2 e“ K(s) Ba2+ (aq) + 2 e Bio* (aq) + 2 H* (aq) + 3 e- Br2(1) + 2 e - 2 Br (aq) 2 Bro; (ag) + 12 H*(aq) + 10 e - -2.925 Ba(s) -2.90 Bi(s) + H2O(1) Li(s) -3.05 +0.32 +1.065 Mg(s) -2.37 +1.52 » Mn(s) -1.18 MnO;(s) + 4 H*(aq) + 2 e- Brz(1) + 6 H2O(1) H2C,O4(ag) +1.23 > Mn*(aq) + 2 H;0() 2 CO:(g) + 2 H* (aq) + 2e → Ca2+ (aq) + 2 e Cd2+(aq) + 2 e Ce*+(aq) + e → Cl(g) + 2 e" - 2 CI (ag) 2 HCIO(ag) + 2 н*(аq) + 2 е -0.49 MnO4 (aq) + 8 H* (aq) + 5 e --→ Ca(s) Cd(s) Ce* (aq) - -2.87 +1.51 Mn?*(ag) + 4 H;O() -0.403 Mno, (ag) + 2 H,O(1) + 3 e +0.59 +1.61 MnO2(s) + 4 OH"(aq) +1.359 HNO,(aq) + H* (aq) + e" N2(g) + 4 H20(!) + 4e NO(g) + H2O(1) 4 OH (aq) + N,H4(aq) N,H3*(aq) +1.63 +1.00 Cl2(g) + 2 H2O(I) -1.16 CIO (aq) + H,O(1) + 2 e N2(g) + 5 H* (ag) + 4 e NO, (aq) + 4 H* (aq) + 3 e --→ NO(g) + 2 H,O() Na* (ag) + e – Na(s) Ni?* (aq) + 2 e Oz(g) + 4 H*(aq) + 4e Oz(g) + 2 H;O(I) + 4 e 4 OH (aq) O,(g) + 2 H* (ag) + 2e O3lg) + 2 H*(aq) + 2 e Pb* (aq) + 2 e Pb(s) PbO2(s) + HSO, (aq) + 3 H*(aq) + 2 e +0.89 -0.23 CI (ag) + 2 OH (aq) +0.96 2 ClO, (ag) + 12 H* (aq) + 10 e +1.47 -2.71 Cl2(g) + 6 H20(1) - Ni(s) -0.28 Co2+(aq) + 2 e Co(s) Co+ (aq) + e Co2+(aq) Cr*(aq) + 3 e" Cr*(ag) + e Cro,"(aq) + 14 H*(aq) + 6 e - -0.277 2 H,O(1) +1.23 +1.842 +0.40 H;O2(aq) O,(g) + H,0() - Cr(s) -0.74 +0.68 Cr* (aq) +2.07 -0.41 +1.33 -0.126 2 Cr* (aq) + 7 H,0(1) +1.685 Cro,"(aq) + 4 H;O() + 3e - PbSO,(s) + 2 H0(1) Pb(s) + HSO, (aq) -0.13 Cr(OH)3(s) + 5 OH (aq) PbSO,(s) + H*(aq) + 2 e PtCl (aq) + 2 e S(s) + 2 H*(aq) + 2 e H,SO3(ag) + 4 H*(aq) + 4 e - S(s) + 3 H2O(1) HSO, (aq) + 3 H*(aq) + 2 e -0.356 Cu?*(ag) + 2 e Cu(s) Cu2* (ag) + e - Cu* (aq) Cu*(aq) + e Cul(s) + e +0.337 Pt(s) + 4 CI (aq) +0.73 +0.153 H,S(g) +0.141 - Cu(s) - Cu(s) + I (aq) 2 F(aq) +0.521 +0.45 -0.185 +0.17 F2(g) + 2 e Fe*(ag) + 2 e Fe*(ag) + e → Fe(CN), (aq) + e 2 H* (ag) + 2 e → - +2.87 H2SO3(aq) + H,0(1) Sn²*(aq) + 2 e Sn** (aq) + 2 e-→ VO," (ag) + 2 H*(aq) + e Zn2+(aq) + 2 e Fe(s) -0.440 Sn(s) --0.136 Fe2* (aq) Fe(CN), (aq) +0.771 Sn²* (aq) +0.154 +0.36 vo* (ag) + H,O(1) +1.00 H;(g) 0.000 Zn(s) -0.763
4. *For the unbalanced reaction Fe3+(aq) +I-(aq) → Fe²*(aq) + I2(s) а. Balance the reaction and label the oxidation and reduction half reactions. b. Identify the anode and cathode c. What is the oxidizing agent? The reducing agent? d. Using the table of standard reduction potentials, calculate E° for this cell.
Transcribed Image Text:4. *For the unbalanced reaction Fe3+(aq) +I-(aq) → Fe²*(aq) + I2(s) а. Balance the reaction and label the oxidation and reduction half reactions. b. Identify the anode and cathode c. What is the oxidizing agent? The reducing agent? d. Using the table of standard reduction potentials, calculate E° for this cell.
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