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Using the half reaction data in (Table 9.3; write balanced overall reactions for the following redox processes. Calculate the Eº, pe° and AG values for each overall reaction. Indicate whether each reaction is thermodynamically favorable under standard conditions.

Using the half reaction data in (Table 9.3; write balanced overall reactions for the following redox processes. Calculate the Eº, pe° and AG values for each overall reaction. Indicate whether each reaction is thermodynamically favorable under standard conditions.

Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter17: Electrochemistry
Section: Chapter Questions
Problem 35P
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Using the half reaction data in (Table 9.3; ' write balanced overall reactions for the following redox processes. Calculate the Eº, pe° and AG° values for each overall reaction. Indicate whether each reaction is thermodynamically favorable under standard conditions. i) Oxidation of Mn²+ to MnO₂(s) using l₂(aq) to form I-. Oxidation of Pb(s) to Pb²+ by Zn²+ to form Zn(s). ii)
Transcribed Image Text:Using the half reaction data in (Table 9.3; ' write balanced overall reactions for the following redox processes. Calculate the Eº, pe° and AG° values for each overall reaction. Indicate whether each reaction is thermodynamically favorable under standard conditions. i) Oxidation of Mn²+ to MnO₂(s) using l₂(aq) to form I-. Oxidation of Pb(s) to Pb²+ by Zn²+ to form Zn(s). ii)
Reaction NO3 + 2e + 2HNO₂ + H₂O NO3 + 8e + 10H NH₂ + 3H₂O NO₂ + 8e +9H+ NH3(aq) + 3H₂O NO3 + 3e + 4HNO(g) + 2H₂O 2NO3 + 10e +12H* N₂(g) + 6H₂O + 2H+ NO(g) + H₂O N₂(g) + H₂O +9HHS + 4H₂O NO₂(g) + 2e N₂O(g) + 2e + 2H+ SO2 + 8e SO² + 8e + 10H → H₂S(aq) + 4H₂O SO² +2e + 2H SO₂² + H₂O SeO2 +2e + 4H* → H₂SeO3 + H₂O H₂PO4 + 2e + 2H+ → H3PO3 + H₂O ASO³ + 2e + 2H+ AsO³ + H₂O CrO2 + 3e + 8H* → Cr³+ + 4H₂O OCN + 2e + 2H+ → CN + H₂O 2H+ + 2e → H₂(g) 2H+ + 2e H₂(aq) O₂(g) + 4H+ + 4e¯ → 2H₂O O₂(aq) + 4H+ + 4e¯¯ → 2H₂O O₂(aq) + 2e + 2H* → H₂O₂(aq) H₂O₂(aq) + 2e + 2H+ → 2H₂O 03(g) + 2e + 2H+ Cl₂(aq) + 2e2C1 CIO₂ + 6e + 6HCl + 3H₂O HOCI + 2e + HCl + H₂O CIO₂ + 5e + 4H+ →CI + 2H₂O CIO₂ + 4e + 4HCI + 2H₂O HOBr + 2e + H → Br + H₂O 2HOBr + 2e + 2H+ BrO3 + 6H+ + 6e Al³+ + 3e Al(s) Zn²+ + 2e → Zn(s) Ni2+ + 2e Ni(s) Pb2+ + 2e Pb(s) Cu²+ +eCut Cu²+ + 2e Fe³+ + e Fe2+ + 2e Fe(s) Hg₂2 +2e2Hg(1) Ag+ e Pb+ + 2e Cu(s) Fe²+ Ag(s) Pb²+ O₂(g) + H₂O Br₂(aq) + 2H₂O Br + 3H₂O 2Hg2+ + 2e → Hg₂+ 2+ MnO₂ (s) + 2e + 4H+ →Mn²+ + 2H₂O Mn³++eMn²+ MnO + 5e + 8H →Mn²+ + 4H₂O Co³++e Log K 28.57 119.08 109.83 48.40 210.34 53.60 59.79 33.68 40.67 27.16 36.32 - 10.10 5.29 77.00 -4.88 0.00 -3.10 83.12 86.00 26.34 59.59 70.12 47.20 147.02 50.20 126.67 109.06 45.36 53.60 146.10 -85.71 -25.76 -7.98 -4.27 2.72 11.48 13.03 - 14.90 26.91 13.51 28.64 30.79 41.60 25.51 127.82 Peº 14.29 14.89 13.73 16.13 21.03 26.80 29.89 4.21 5.08 13.58 18.16 -5.05 2.64 25.66 -2.44 0.00 -1.55 20.78 21.50 13.17 29.80 35.06 23.60 24.50 25.10 25.33 27.27 22.68 26.80 24.35 -28.57 - 12.88 -3.99 -2.13 2.72 5.74 13.03 -7.45 13.46 13.51 14.32 15.40 20.80 25.51 25.56 pe (W) 7.28 6.14 5.85 6.80 12.63 19.80 22.89 -3.67 -3.67 6.58 4.16 -12.05 -4.36 7.00 -9.44 -7.00 -8.55 13.78 14.50 6.17 22.80 28.06 23.60 17.50 21.60 19.73 20.26 19.18 20.27 17.35 -28.57 -12.88 -3.99 -2.13 2.72 5.74 13.03 -7.45 13.46 13.51 14.32 15.40 6.80 25.51 14.36 33 10 EH, mV 843 878 809 952 1241 1581 1764 248 299 801 1071 -298 156 1514 - 144 0 -92 1226 1268 777 1758 2069 1392 1446 1481 1495 1609 1338 1581 1437 -1686 -760 -236 -126 160 339 769 -441 794 797 845 908 1227 1505 1508 1953
Transcribed Image Text:Reaction NO3 + 2e + 2HNO₂ + H₂O NO3 + 8e + 10H NH₂ + 3H₂O NO₂ + 8e +9H+ NH3(aq) + 3H₂O NO3 + 3e + 4HNO(g) + 2H₂O 2NO3 + 10e +12H* N₂(g) + 6H₂O + 2H+ NO(g) + H₂O N₂(g) + H₂O +9HHS + 4H₂O NO₂(g) + 2e N₂O(g) + 2e + 2H+ SO2 + 8e SO² + 8e + 10H → H₂S(aq) + 4H₂O SO² +2e + 2H SO₂² + H₂O SeO2 +2e + 4H* → H₂SeO3 + H₂O H₂PO4 + 2e + 2H+ → H3PO3 + H₂O ASO³ + 2e + 2H+ AsO³ + H₂O CrO2 + 3e + 8H* → Cr³+ + 4H₂O OCN + 2e + 2H+ → CN + H₂O 2H+ + 2e → H₂(g) 2H+ + 2e H₂(aq) O₂(g) + 4H+ + 4e¯ → 2H₂O O₂(aq) + 4H+ + 4e¯¯ → 2H₂O O₂(aq) + 2e + 2H* → H₂O₂(aq) H₂O₂(aq) + 2e + 2H+ → 2H₂O 03(g) + 2e + 2H+ Cl₂(aq) + 2e2C1 CIO₂ + 6e + 6HCl + 3H₂O HOCI + 2e + HCl + H₂O CIO₂ + 5e + 4H+ →CI + 2H₂O CIO₂ + 4e + 4HCI + 2H₂O HOBr + 2e + H → Br + H₂O 2HOBr + 2e + 2H+ BrO3 + 6H+ + 6e Al³+ + 3e Al(s) Zn²+ + 2e → Zn(s) Ni2+ + 2e Ni(s) Pb2+ + 2e Pb(s) Cu²+ +eCut Cu²+ + 2e Fe³+ + e Fe2+ + 2e Fe(s) Hg₂2 +2e2Hg(1) Ag+ e Pb+ + 2e Cu(s) Fe²+ Ag(s) Pb²+ O₂(g) + H₂O Br₂(aq) + 2H₂O Br + 3H₂O 2Hg2+ + 2e → Hg₂+ 2+ MnO₂ (s) + 2e + 4H+ →Mn²+ + 2H₂O Mn³++eMn²+ MnO + 5e + 8H →Mn²+ + 4H₂O Co³++e Log K 28.57 119.08 109.83 48.40 210.34 53.60 59.79 33.68 40.67 27.16 36.32 - 10.10 5.29 77.00 -4.88 0.00 -3.10 83.12 86.00 26.34 59.59 70.12 47.20 147.02 50.20 126.67 109.06 45.36 53.60 146.10 -85.71 -25.76 -7.98 -4.27 2.72 11.48 13.03 - 14.90 26.91 13.51 28.64 30.79 41.60 25.51 127.82 Peº 14.29 14.89 13.73 16.13 21.03 26.80 29.89 4.21 5.08 13.58 18.16 -5.05 2.64 25.66 -2.44 0.00 -1.55 20.78 21.50 13.17 29.80 35.06 23.60 24.50 25.10 25.33 27.27 22.68 26.80 24.35 -28.57 - 12.88 -3.99 -2.13 2.72 5.74 13.03 -7.45 13.46 13.51 14.32 15.40 20.80 25.51 25.56 pe (W) 7.28 6.14 5.85 6.80 12.63 19.80 22.89 -3.67 -3.67 6.58 4.16 -12.05 -4.36 7.00 -9.44 -7.00 -8.55 13.78 14.50 6.17 22.80 28.06 23.60 17.50 21.60 19.73 20.26 19.18 20.27 17.35 -28.57 -12.88 -3.99 -2.13 2.72 5.74 13.03 -7.45 13.46 13.51 14.32 15.40 6.80 25.51 14.36 33 10 EH, mV 843 878 809 952 1241 1581 1764 248 299 801 1071 -298 156 1514 - 144 0 -92 1226 1268 777 1758 2069 1392 1446 1481 1495 1609 1338 1581 1437 -1686 -760 -236 -126 160 339 769 -441 794 797 845 908 1227 1505 1508 1953
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