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Calculate values for the following cells. Which reactions are spontaneous as written (under standard conditions)? Balance the equations. Standard reduction potentials are found in the Standard Reduction Potentials table. (Use the lowest possible whole number coefficients. Include states-of-matter under the given conditions in your answer.) (a) Cr₂0₂2(aq) +1(aq) 1₂(s) + ³+ (aq) V P spontaneity: spontaneous not spontaneous balanced equation: chemPad (b) Cr₂0₂2(aq) + F(aq)-F₂(g) + ³+ (aq) spontaneity spontaneous not spontaneous balanced equation: chemPad 1x144 Help spontaneity: K) Hell) H (0) + H (9) Help balanced equation: chemPad spontaneous not spontaneous Help

Calculate values for the following cells. Which reactions are spontaneous as written (under standard conditions)? Balance the equations. Standard reduction potentials are found in the Standard Reduction Potentials table. (Use the lowest possible whole number coefficients. Include states-of-matter under the given conditions in your answer.) (a) Cr₂0₂2(aq) +1(aq) 1₂(s) + ³+ (aq) V P spontaneity: spontaneous not spontaneous balanced equation: chemPad (b) Cr₂0₂2(aq) + F(aq)-F₂(g) + ³+ (aq) spontaneity spontaneous not spontaneous balanced equation: chemPad 1x144 Help spontaneity: K) Hell) H (0) + H (9) Help balanced equation: chemPad spontaneous not spontaneous Help

Chemistry: Principles and Practice
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter18: Electrochemistry
Section: Chapter Questions
Problem 18.59QE
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Standard Reduction Potentials at 25°C (298 K) for Many Common Half-reactions Half-reaction 8° (V) Half-reaction F₂ +2e2F- Ag2+ + e Ag+ Co³+ + e→→ Co²+ H₂O₂ + 2H+ + 2e Ce4++e Ce³+ → 2H₂O PbO₂ + 4H+ + SO42 MnO4 + 4H+ + 3e IO4 + 2H+ + 2e → MnO4 + 8H+ + Se Au³+ + 3e → Au PbO₂ + 4H+ + 2e Cl₂ +2e2C1- Hg₂2+ + 2e Fe³+ + e +2e →→ PbSO4 + 2H₂O → MnO₂ + 2H₂O IO3 + H₂O → Mn²+ + 4H₂O → Pb²+ + 2H₂O Cr₂O72- + 14H+ + 6e- →2Cr³+ + 7H₂O O₂ + 4H+ + 4e → 2H₂O MnO₂ + 4H+ + 2e IO3 + 6H+ + Se- Br₂ 2e 2Br VO₂+ + 2H+ + e AuCl4 + 3e → NO3 + 4H+ ClO₂ + e 2Hg2+ + 2e Age → Ag → Mn²+ + 2H₂O → 1₂ + 3H₂O → VO2+ + H₂O Au + 4CI- + 3e → NO + 2H₂O ClO₂- → Hg₂²+ → 2Hg Fe2+ O₂ + 2H+ + 2e → H₂O₂ MnO4 + e→→ MnO4²- 1₂ +2e → 21- Cute Cu 2.87 1.99 1.82 1.78 1.70 1.69 1.68 1.60 1.51 1.50 1.46 1.36 1.33 1.23 1.21 1.20 1.09 1.00 0.99 0.96 0.954 0.91 0.80 0.80 0.77 0.68 0.56 0.54 0.52 O₂ + 2H₂O + 4e4OH- Cu2+ + 2e → Cu Hg₂Cl₂ + 2e →→ 2Hg + 2Cl- AgCl +eAg + Cl- SO4 + 4H+ + 2e Cu²+ + e 2H+ + 2e Fe³+ + 3e Cu+ →→ H₂ →→ Fe →→ Pb →→ Sn →→ Ni Pb2+ + 2e Sn²+ + 2e Ni2+ + 2e PbSO4 + 2e Cd2+ + 2e →→ Pb + SO4²- →→ Cd →→→ Fe Fe2+ + 2e Cr³+ + e Cr²+ Cr³+ + 3e → Cr → Zn Zn²+ + 2e 2H₂O + 2e → H₂ + 2OH- Mn²+ + 2e → Mn Al³+ + 3e →→ Al H₂ +2e → 2H- Mg2+ + 2e → Mg La³+ + 3e → La →→→ Na Na+ + e Ca2+ + 2e Ba2+ + 2e K++eK Lite Li → H₂SO3 + H₂O →→ Ca →→ Ba 8° (V) 0.40 0.34 0.27 0.22 0.20 0.16 0.00 -0.036 -0.13 -0.14 -0.23 -0.35 -0.40 -0.44 -0.50 -0.73 -0.76 -0.83 -1.18 -1.66 -2.23 -2.37 -2.37 -2.71 -2.76 -2.90 -2.92 -3.05
Transcribed Image Text:Standard Reduction Potentials at 25°C (298 K) for Many Common Half-reactions Half-reaction 8° (V) Half-reaction F₂ +2e2F- Ag2+ + e Ag+ Co³+ + e→→ Co²+ H₂O₂ + 2H+ + 2e Ce4++e Ce³+ → 2H₂O PbO₂ + 4H+ + SO42 MnO4 + 4H+ + 3e IO4 + 2H+ + 2e → MnO4 + 8H+ + Se Au³+ + 3e → Au PbO₂ + 4H+ + 2e Cl₂ +2e2C1- Hg₂2+ + 2e Fe³+ + e +2e →→ PbSO4 + 2H₂O → MnO₂ + 2H₂O IO3 + H₂O → Mn²+ + 4H₂O → Pb²+ + 2H₂O Cr₂O72- + 14H+ + 6e- →2Cr³+ + 7H₂O O₂ + 4H+ + 4e → 2H₂O MnO₂ + 4H+ + 2e IO3 + 6H+ + Se- Br₂ 2e 2Br VO₂+ + 2H+ + e AuCl4 + 3e → NO3 + 4H+ ClO₂ + e 2Hg2+ + 2e Age → Ag → Mn²+ + 2H₂O → 1₂ + 3H₂O → VO2+ + H₂O Au + 4CI- + 3e → NO + 2H₂O ClO₂- → Hg₂²+ → 2Hg Fe2+ O₂ + 2H+ + 2e → H₂O₂ MnO4 + e→→ MnO4²- 1₂ +2e → 21- Cute Cu 2.87 1.99 1.82 1.78 1.70 1.69 1.68 1.60 1.51 1.50 1.46 1.36 1.33 1.23 1.21 1.20 1.09 1.00 0.99 0.96 0.954 0.91 0.80 0.80 0.77 0.68 0.56 0.54 0.52 O₂ + 2H₂O + 4e4OH- Cu2+ + 2e → Cu Hg₂Cl₂ + 2e →→ 2Hg + 2Cl- AgCl +eAg + Cl- SO4 + 4H+ + 2e Cu²+ + e 2H+ + 2e Fe³+ + 3e Cu+ →→ H₂ →→ Fe →→ Pb →→ Sn →→ Ni Pb2+ + 2e Sn²+ + 2e Ni2+ + 2e PbSO4 + 2e Cd2+ + 2e →→ Pb + SO4²- →→ Cd →→→ Fe Fe2+ + 2e Cr³+ + e Cr²+ Cr³+ + 3e → Cr → Zn Zn²+ + 2e 2H₂O + 2e → H₂ + 2OH- Mn²+ + 2e → Mn Al³+ + 3e →→ Al H₂ +2e → 2H- Mg2+ + 2e → Mg La³+ + 3e → La →→→ Na Na+ + e Ca2+ + 2e Ba2+ + 2e K++eK Lite Li → H₂SO3 + H₂O →→ Ca →→ Ba 8° (V) 0.40 0.34 0.27 0.22 0.20 0.16 0.00 -0.036 -0.13 -0.14 -0.23 -0.35 -0.40 -0.44 -0.50 -0.73 -0.76 -0.83 -1.18 -1.66 -2.23 -2.37 -2.37 -2.71 -2.76 -2.90 -2.92 -3.05
Calculate values for the following cells. Which reactions are spontaneous as written (under standard conditions)? Balance the equations. Standard reduction potentials are found in the Standard Reduction Potentials table. (Use the lowest possible whole number coefficients. Include states-of-matter under the given conditions in your answer.) (a) Cr₂0₂²(aq) + 1(aq) = 1₂(s) + Cr³+ (aq) spontaneity: spontaneous not spontaneous balanced equation: chemPad (b) Cr₂072 (aq) + F(aq) = F₂(g) + Cr³+ (aq) f Help De spontaneity: spontaneous not spontaneous balanced equation: chemPad spontaneity: (c) H₂(g) H(aq) + H(aq) spontaneous not spontaneous balanced equation chemPad spontaneity: (d) Ni2+ (aq) + Ca(s) - Cd²+ (aq) + Ni(s) V spontaneous Help not spontaneous
Transcribed Image Text:Calculate values for the following cells. Which reactions are spontaneous as written (under standard conditions)? Balance the equations. Standard reduction potentials are found in the Standard Reduction Potentials table. (Use the lowest possible whole number coefficients. Include states-of-matter under the given conditions in your answer.) (a) Cr₂0₂²(aq) + 1(aq) = 1₂(s) + Cr³+ (aq) spontaneity: spontaneous not spontaneous balanced equation: chemPad (b) Cr₂072 (aq) + F(aq) = F₂(g) + Cr³+ (aq) f Help De spontaneity: spontaneous not spontaneous balanced equation: chemPad spontaneity: (c) H₂(g) H(aq) + H(aq) spontaneous not spontaneous balanced equation chemPad spontaneity: (d) Ni2+ (aq) + Ca(s) - Cd²+ (aq) + Ni(s) V spontaneous Help not spontaneous
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