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Cr3+(aq) → Cr(s) Zn2+(aq) → Zn(s) a. What will be the overall balanced reaction if you want to make a galvanic cell? b. What is the standard cell potential, E°cell?(use values from the provided SRP table) c. If the initial concentrations are [Cr3+]=0.010 M and [Zn2+]=0.0085 M, what is Ecell?

Cr3+(aq) → Cr(s) Zn2+(aq) → Zn(s) a. What will be the overall balanced reaction if you want to make a galvanic cell? b. What is the standard cell potential, E°cell?(use values from the provided SRP table) c. If the initial concentrations are [Cr3+]=0.010 M and [Zn2+]=0.0085 M, what is Ecell?

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Cr3+(aq) → Cr(s)
Zn2+(aq) → Zn(s)

a. What will be the overall balanced reaction if you want to make a galvanic cell?

b. What is the standard cell potential, E°cell?(use values from the provided SRP table)

c. If the initial concentrations are [Cr3+]=0.010 M and [Zn2+]=0.0085 M, what is Ecell?

Half-Reaction E"(V) F(g) + 2e - 2F (aq) O,(g) + 2H (aq) + 2e Co" (ag) + e Co" (aq) H;O;(aq) + 2H (aq) + 2e 2H;0 PbO;(s) + 4H (aq) + so (aq) + 2e PbSO,(s) + 2H,0 Cet" (ag) + e Ce"(aq) Mno, (aq) + 8H' (aq) + Se Mn" (aq) + 4H,0 Au" (ag) + 3e Au(s) Cl(g) + 2e - 2C1 (aq) CrO (aq) + 14H' (ag) + be - 2Cr" (aq) + 7H;0 MnO;(s) + 4H' (aq) + 2e Mn" (aq) + 2H,0 O,(g) + 4H*(aq) + 4e 2H;0 Br() + 2e - 2Br (aq) NO, (aq) + 4H' (aq) + 3e 2Hg" (aq) + 2e – Hg" (ag) Hg" (aq) + 2e 2Hg() Ag (aq) + e Ag(s) Fe" (aq) + e O;(g) + 2H* (aq) + 2e H;O,(aq) MnO, (aq) + 2H;0 + 3e - Iz(s) + 2e- 21 (ag) O,(g) + 2H,0 + 4e 40H (ag) Cu" (aq) + 2e Cu(s) * ABCI(s) + e - Ag(s) + CI (aq) so, (ag) + 4H'(aq) + 2e SO;(g) + 2H;0 Cu" (ag) + e Sn* (ag) + 2e Sn" (aq) 2H (aq) + 2e" Pb" +2.87 + 0,(8) + H,0 +2.07 +1.82 +1.77 +1.70 +1.61 +1.51 +1.50 +1.36 +1.33 +1.23 +1.23 +1.07 + NO(g) + 2H;O +0.96 +0.92 +0.85 +0.80 +0.77 - Fe* (aq) +0.68 + MnO,(s) + 4OH (aq) +0.59 +0.53 +0.40 +0.34 +0.22 +0.20 Cu" (ag) +0.15 +0.13 H(g) 0.00 (aq) + 2e - Pb(s) Sn" (ag) + 2e Ni* (aq) + 2e Ni(s) Co" (aq) + 2e Co(s) PbSO,(s) + 2e - Pb(s) + so (ag) -0.13 Sn(s) --0.14 -0.25 -0.28 -0.31 Increasing strength as oxidizing agent Increasing strength as reducing agent
Transcribed Image Text:Half-Reaction E"(V) F(g) + 2e - 2F (aq) O,(g) + 2H (aq) + 2e Co" (ag) + e Co" (aq) H;O;(aq) + 2H (aq) + 2e 2H;0 PbO;(s) + 4H (aq) + so (aq) + 2e PbSO,(s) + 2H,0 Cet" (ag) + e Ce"(aq) Mno, (aq) + 8H' (aq) + Se Mn" (aq) + 4H,0 Au" (ag) + 3e Au(s) Cl(g) + 2e - 2C1 (aq) CrO (aq) + 14H' (ag) + be - 2Cr" (aq) + 7H;0 MnO;(s) + 4H' (aq) + 2e Mn" (aq) + 2H,0 O,(g) + 4H*(aq) + 4e 2H;0 Br() + 2e - 2Br (aq) NO, (aq) + 4H' (aq) + 3e 2Hg" (aq) + 2e – Hg" (ag) Hg" (aq) + 2e 2Hg() Ag (aq) + e Ag(s) Fe" (aq) + e O;(g) + 2H* (aq) + 2e H;O,(aq) MnO, (aq) + 2H;0 + 3e - Iz(s) + 2e- 21 (ag) O,(g) + 2H,0 + 4e 40H (ag) Cu" (aq) + 2e Cu(s) * ABCI(s) + e - Ag(s) + CI (aq) so, (ag) + 4H'(aq) + 2e SO;(g) + 2H;0 Cu" (ag) + e Sn* (ag) + 2e Sn" (aq) 2H (aq) + 2e" Pb" +2.87 + 0,(8) + H,0 +2.07 +1.82 +1.77 +1.70 +1.61 +1.51 +1.50 +1.36 +1.33 +1.23 +1.23 +1.07 + NO(g) + 2H;O +0.96 +0.92 +0.85 +0.80 +0.77 - Fe* (aq) +0.68 + MnO,(s) + 4OH (aq) +0.59 +0.53 +0.40 +0.34 +0.22 +0.20 Cu" (ag) +0.15 +0.13 H(g) 0.00 (aq) + 2e - Pb(s) Sn" (ag) + 2e Ni* (aq) + 2e Ni(s) Co" (aq) + 2e Co(s) PbSO,(s) + 2e - Pb(s) + so (ag) -0.13 Sn(s) --0.14 -0.25 -0.28 -0.31 Increasing strength as oxidizing agent Increasing strength as reducing agent
Co" (aq) + 2e PbSO,(s) + 2e Ca* (aq) + 2e Fe" (aq) + 2e Fe(s) C*(aq) + 3e Cr(s) Zn* (aq) + 2e – Zn(s) 2H,0 + 2e H;(g) + 20H (aq) Mn" (ag) + 2e Al" (aq) + 3e Al(s) Be" (aq) + 2e → Be(s) Mg" (ag) + 2e - Mg(s) Na (aq) + e Ca" (aq) + 2e Sr"(aq) + 2e Sr(s) Ba"(aq) + 2e – Ba(s) K'(aq) + e - K(s) Li' (aq) + e - Li(s) + Co(s) Pb(s) + So, (ag) Cd(s) -0.28 -0.31 -0.40 --0.44 -0.74 -0.76 -0.83 + Mn(s) -1.18 -1.66 -1.85 -2.37 + Na(s) + Ca(s) -2.71 -2.87 -2.89 -2.90 -2.93 -3.05
Transcribed Image Text:Co" (aq) + 2e PbSO,(s) + 2e Ca* (aq) + 2e Fe" (aq) + 2e Fe(s) C*(aq) + 3e Cr(s) Zn* (aq) + 2e – Zn(s) 2H,0 + 2e H;(g) + 20H (aq) Mn" (ag) + 2e Al" (aq) + 3e Al(s) Be" (aq) + 2e → Be(s) Mg" (ag) + 2e - Mg(s) Na (aq) + e Ca" (aq) + 2e Sr"(aq) + 2e Sr(s) Ba"(aq) + 2e – Ba(s) K'(aq) + e - K(s) Li' (aq) + e - Li(s) + Co(s) Pb(s) + So, (ag) Cd(s) -0.28 -0.31 -0.40 --0.44 -0.74 -0.76 -0.83 + Mn(s) -1.18 -1.66 -1.85 -2.37 + Na(s) + Ca(s) -2.71 -2.87 -2.89 -2.90 -2.93 -3.05
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