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d) Fe2+/Fe + Zn2+/Zn chemPad XoXº E° = .31 Greek Zn (s) + Fe²+ (aq) Zn²+ (aq) + Fe ( Zn (s) + Fe^2+ (aq) --> Zn^2+ (aq) + Fe (s) Correct. X V Help n (moles of e) = 2

d) Fe2+/Fe + Zn2+/Zn chemPad XoXº E° = .31 Greek Zn (s) + Fe²+ (aq) Zn²+ (aq) + Fe ( Zn (s) + Fe^2+ (aq) --> Zn^2+ (aq) + Fe (s) Correct. X V Help n (moles of e) = 2

Chemistry by OpenStax (2015-05-04)
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter17: Electrochemistry
Section: Chapter Questions
Problem 31E: Determine the standard cell potential and the cell potential under the stated conditions for the...
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Use the Standard Reduction Table to answer the following questions. Write a balanced net redox equation and determine both the standard cell potential and the number of electrons transferred for the spontaneous redox process that occurs when the following couples are connected. Use the lowest possib matter under the given conditions in your answer. For the reaction arrow, please use an extensive arrow to the right (-->). d) Fe2+/Fe + Zn²+/Zn chemPad XX→← Zn (s) + Fe2+ (aq) → Zn²+ (aq) + Fe ( Zn (s) + Fe^2+ (aq) --> Zn^2+ (aq) + Fe (s) Correct. E° = .31 Reduction half-reactions Li¹+ (aq) + e¹- K¹+ (aq)+ e¹- Ba²+ (aq) + 2 e¹- Ca²+ (aq) + 2 e¹- Na¹ + (aq) + e¹- Mg²+ (aq) + 2 e¹- Al³+ (aq) + 3 e¹- U³+ (aq) + 3 e¹- Ti²+ (aq) + 2 e¹- Mn²+ (aq) + 2 e¹- 2 H₂O +2 e¹- Zn²+ (aq) + 2 e¹- Cr³+ (aq) + 3 e¹- HCHO(aq) + 2 H₂O +2e¹- Fe²+ (aq) + 2 e¹- 2 H₂O +2 e¹- X V Cd²+ (aq) + 2 e¹- PbSO4(s) + 2 e¹- In³+ (aq) + 3 e¹- Co²+ (aq) + 2 e¹- → Help Greek n (moles of e") = 2 E°(V) -3.04 -2.92 -2.92 -2.84 -2.71 -2.36 -1.66 -1.66 -1.63 -1.18 -0.83 -0.76 -0.74 CH3OH(aq) + 2 OH¹-(aq) -0.59 Fe(s) H₂(g) + 2 OH¹ (aq) Cd(s) Pb(s) + SO4² (aq) -0.44 -0.41* -0.40 -0.36 In(s) -0.34 -0.28 Co(s) Li(s) K(s) Ba(s) Ca(s) Na(s) Mg(s) Al(s) U(S) Ti(s) Mn(s) H₂(g) + 2 OH¹ (aq) Zn(s) ⇒ Cr(s) Sn²+ (aq) + 2 e¹- Pb²+ (aq) + 2 e¹- 2 H¹*(aq) +2e¹- Sn4+ (aq) +2e¹- Cu²+ (aq) + e¹- CIO4¹ (aq) + H₂O() +2e¹- AgCl(s) + e¹- PbO₂(s) + 2 H¹*(aq) + 2 e¹- Cu²+ (aq) + 2 e¹- Ag2O(s) +H₂O +2e¹1- CIO3¹ (aq) + H₂O() +2e¹- O2(g) + 2 H₂O + 4e¹- 12(3)+2e¹- CIO₂¹ (aq) + H₂O() +2e¹- 2 AgO(s) + H₂O +2e¹- O₂(g) + 2 H¹+ (aq) + 2e¹- Fe³+ (aq) + e¹- Bro¹-(aq) + H₂O +2 e¹- Ag¹+ (aq) +el- O₂(g) + 4 H¹*(aq) + 4e¹- H₂O₂(aq) +2e¹- CIO¹ (aq) + H₂O +2e¹- Hg2+ (aq) + 2 e¹- NO3(aq) + 4 H¹+ (aq) + 3 e¹- VO₂¹(aq) + 2 H¹*(aq) + e¹- Bron+2e¹- Sn(s) Pb(s) =H₂(g) -0.14 -0.13 0.00 Sn²(aq) +0.15 Cu¹*(aq) +0.16 CIO3¹ (aq) + 2 OH¹ (aq) +0.17 +0.22 +0.28 Cu(s) +0.34 2 Ag(s) + 2 OH¹-(aq) +0.34 CIO₂¹(aq) + 2 OH¹ (aq) +0.35 +0.40 Ag(s) + C1¹ (aq) PbO(s) + H₂O 4 OH¹ (aq) 21¹-(aq) CIO¹ (aq) + 2 OH¹-(aq) Ag₂O(s) + 2 OH¹ (aq) = H2O2(80) Fe²+ (aq) Br¹-(aq) + 2 OH¹-(aq) Ag(s) ⇒ 2 H₂O ⇒2 OH¹ (aq) CI¹(aq) + 2 OH¹-(aq) Hg() NO(g) + 2 H₂O VO² (aq) + H₂O 2 r¹(a) +0.54 +0.59 +0.60 +0.70 +0.77 +0.77 +0.80 +0.82* +0.88 +0.89 +0.85 +0.96 +1.00 +1.09 Ar
Transcribed Image Text:Use the Standard Reduction Table to answer the following questions. Write a balanced net redox equation and determine both the standard cell potential and the number of electrons transferred for the spontaneous redox process that occurs when the following couples are connected. Use the lowest possib matter under the given conditions in your answer. For the reaction arrow, please use an extensive arrow to the right (-->). d) Fe2+/Fe + Zn²+/Zn chemPad XX→← Zn (s) + Fe2+ (aq) → Zn²+ (aq) + Fe ( Zn (s) + Fe^2+ (aq) --> Zn^2+ (aq) + Fe (s) Correct. E° = .31 Reduction half-reactions Li¹+ (aq) + e¹- K¹+ (aq)+ e¹- Ba²+ (aq) + 2 e¹- Ca²+ (aq) + 2 e¹- Na¹ + (aq) + e¹- Mg²+ (aq) + 2 e¹- Al³+ (aq) + 3 e¹- U³+ (aq) + 3 e¹- Ti²+ (aq) + 2 e¹- Mn²+ (aq) + 2 e¹- 2 H₂O +2 e¹- Zn²+ (aq) + 2 e¹- Cr³+ (aq) + 3 e¹- HCHO(aq) + 2 H₂O +2e¹- Fe²+ (aq) + 2 e¹- 2 H₂O +2 e¹- X V Cd²+ (aq) + 2 e¹- PbSO4(s) + 2 e¹- In³+ (aq) + 3 e¹- Co²+ (aq) + 2 e¹- → Help Greek n (moles of e") = 2 E°(V) -3.04 -2.92 -2.92 -2.84 -2.71 -2.36 -1.66 -1.66 -1.63 -1.18 -0.83 -0.76 -0.74 CH3OH(aq) + 2 OH¹-(aq) -0.59 Fe(s) H₂(g) + 2 OH¹ (aq) Cd(s) Pb(s) + SO4² (aq) -0.44 -0.41* -0.40 -0.36 In(s) -0.34 -0.28 Co(s) Li(s) K(s) Ba(s) Ca(s) Na(s) Mg(s) Al(s) U(S) Ti(s) Mn(s) H₂(g) + 2 OH¹ (aq) Zn(s) ⇒ Cr(s) Sn²+ (aq) + 2 e¹- Pb²+ (aq) + 2 e¹- 2 H¹*(aq) +2e¹- Sn4+ (aq) +2e¹- Cu²+ (aq) + e¹- CIO4¹ (aq) + H₂O() +2e¹- AgCl(s) + e¹- PbO₂(s) + 2 H¹*(aq) + 2 e¹- Cu²+ (aq) + 2 e¹- Ag2O(s) +H₂O +2e¹1- CIO3¹ (aq) + H₂O() +2e¹- O2(g) + 2 H₂O + 4e¹- 12(3)+2e¹- CIO₂¹ (aq) + H₂O() +2e¹- 2 AgO(s) + H₂O +2e¹- O₂(g) + 2 H¹+ (aq) + 2e¹- Fe³+ (aq) + e¹- Bro¹-(aq) + H₂O +2 e¹- Ag¹+ (aq) +el- O₂(g) + 4 H¹*(aq) + 4e¹- H₂O₂(aq) +2e¹- CIO¹ (aq) + H₂O +2e¹- Hg2+ (aq) + 2 e¹- NO3(aq) + 4 H¹+ (aq) + 3 e¹- VO₂¹(aq) + 2 H¹*(aq) + e¹- Bron+2e¹- Sn(s) Pb(s) =H₂(g) -0.14 -0.13 0.00 Sn²(aq) +0.15 Cu¹*(aq) +0.16 CIO3¹ (aq) + 2 OH¹ (aq) +0.17 +0.22 +0.28 Cu(s) +0.34 2 Ag(s) + 2 OH¹-(aq) +0.34 CIO₂¹(aq) + 2 OH¹ (aq) +0.35 +0.40 Ag(s) + C1¹ (aq) PbO(s) + H₂O 4 OH¹ (aq) 21¹-(aq) CIO¹ (aq) + 2 OH¹-(aq) Ag₂O(s) + 2 OH¹ (aq) = H2O2(80) Fe²+ (aq) Br¹-(aq) + 2 OH¹-(aq) Ag(s) ⇒ 2 H₂O ⇒2 OH¹ (aq) CI¹(aq) + 2 OH¹-(aq) Hg() NO(g) + 2 H₂O VO² (aq) + H₂O 2 r¹(a) +0.54 +0.59 +0.60 +0.70 +0.77 +0.77 +0.80 +0.82* +0.88 +0.89 +0.85 +0.96 +1.00 +1.09 Ar
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