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MISSED THIS? Watch KCV: Cell Potential, Free Energy, and the Equilibrium Constant, IWE: Relating AG and E'cell; Read Section 20.5. You can click on the Review link to access the section in your eText. Use tabulated electrode potentials to calculate AG for each reaction at 25 °C. Br₂ (1) +21 (aq) → 2Br¯(aq) +12(s) Express the energy change in kilojoules to two significant figures. ▸ View Available Hint(s) AG = -110 kJ Submit Previous Answers Part B Correct The calculation of the free energy change for this reaction is AG=-nFE--(2 mol e) (96, 485 C/mol e¯) (1.09 V-0.54 V)=(2)(96, 485 C) (0.55 J/C) (The unit conversions and cancellations are implicit, but 1 V = 1 J/C.) Then, the value of -106,134 J is converted to kilojoules and reported to two significant digits: -110 kJ. 2Fe3+(aq) +3Sn(s)→ 2Fe(s) + 35n²+(aq) Express the energy change in kilojoules to two significant figures. ▸ View Available Hint(s) AG= ΜΕ ΑΣΦ Submit Previous Answers Part C ? kJ Incorrect; Try Again Al Study Tools Looking for some guidance? Let's work through a few related practice questions before you go back to the real thing. This won't impact your score, so stop at anytime and ask for clarification whenever you need it. Ready to give it a try? Start O2(g) + 2H2O(l) +2Cu(s) 40H(aq) +2Cu2+(aq) Express the energy change in kilojoules to one significant figure. ▸ View Available Hint(s) AGi- ΜΕ ΑΣΦ Submit Previous Answers ? × Incorrect; Try Again Al Study Tools Looking for some guidance? Let's work through a few related practice questions before you go back to the real thing. kJ

MISSED THIS? Watch KCV: Cell Potential, Free Energy, and the Equilibrium Constant, IWE: Relating AG and E'cell; Read Section 20.5. You can click on the Review link to access the section in your eText. Use tabulated electrode potentials to calculate AG for each reaction at 25 °C. Br₂ (1) +21 (aq) → 2Br¯(aq) +12(s) Express the energy change in kilojoules to two significant figures. ▸ View Available Hint(s) AG = -110 kJ Submit Previous Answers Part B Correct The calculation of the free energy change for this reaction is AG=-nFE--(2 mol e) (96, 485 C/mol e¯) (1.09 V-0.54 V)=(2)(96, 485 C) (0.55 J/C) (The unit conversions and cancellations are implicit, but 1 V = 1 J/C.) Then, the value of -106,134 J is converted to kilojoules and reported to two significant digits: -110 kJ. 2Fe3+(aq) +3Sn(s)→ 2Fe(s) + 35n²+(aq) Express the energy change in kilojoules to two significant figures. ▸ View Available Hint(s) AG= ΜΕ ΑΣΦ Submit Previous Answers Part C ? kJ Incorrect; Try Again Al Study Tools Looking for some guidance? Let's work through a few related practice questions before you go back to the real thing. This won't impact your score, so stop at anytime and ask for clarification whenever you need it. Ready to give it a try? Start O2(g) + 2H2O(l) +2Cu(s) 40H(aq) +2Cu2+(aq) Express the energy change in kilojoules to one significant figure. ▸ View Available Hint(s) AGi- ΜΕ ΑΣΦ Submit Previous Answers ? × Incorrect; Try Again Al Study Tools Looking for some guidance? Let's work through a few related practice questions before you go back to the real thing. kJ

General Chemistry - Standalone book (MindTap Course List)
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter19: Electrochemistry
Section: Chapter Questions
Problem 19.123QP: An aqueous solution of an unknown salt of gold is electrolyzed by a current of 2.75 amps for 3.39...
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MISSED THIS? Watch KCV: Cell Potential, Free Energy, and the Equilibrium Constant, IWE: Relating AG and E'cell; Read Section 20.5. You can click on the Review link to access the section in your eText. Use tabulated electrode potentials to calculate AG for each reaction at 25 °C. Br₂ (1) +21 (aq) → 2Br¯(aq) +12(s) Express the energy change in kilojoules to two significant figures. ▸ View Available Hint(s) AG = -110 kJ Submit Previous Answers Part B Correct The calculation of the free energy change for this reaction is AG=-nFE--(2 mol e) (96, 485 C/mol e¯) (1.09 V-0.54 V)=(2)(96, 485 C) (0.55 J/C) (The unit conversions and cancellations are implicit, but 1 V = 1 J/C.) Then, the value of -106,134 J is converted to kilojoules and reported to two significant digits: -110 kJ. 2Fe3+(aq) +3Sn(s)→ 2Fe(s) + 35n²+(aq) Express the energy change in kilojoules to two significant figures. ▸ View Available Hint(s) AG= ΜΕ ΑΣΦ Submit Previous Answers Part C ? kJ Incorrect; Try Again Al Study Tools Looking for some guidance? Let's work through a few related practice questions before you go back to the real thing. This won't impact your score, so stop at anytime and ask for clarification whenever you need it. Ready to give it a try? Start O2(g) + 2H2O(l) +2Cu(s) 40H(aq) +2Cu2+(aq) Express the energy change in kilojoules to one significant figure. ▸ View Available Hint(s) AGi- ΜΕ ΑΣΦ Submit Previous Answers ? × Incorrect; Try Again Al Study Tools Looking for some guidance? Let's work through a few related practice questions before you go back to the real thing. kJ
Transcribed Image Text:MISSED THIS? Watch KCV: Cell Potential, Free Energy, and the Equilibrium Constant, IWE: Relating AG and E'cell; Read Section 20.5. You can click on the Review link to access the section in your eText. Use tabulated electrode potentials to calculate AG for each reaction at 25 °C. Br₂ (1) +21 (aq) → 2Br¯(aq) +12(s) Express the energy change in kilojoules to two significant figures. ▸ View Available Hint(s) AG = -110 kJ Submit Previous Answers Part B Correct The calculation of the free energy change for this reaction is AG=-nFE--(2 mol e) (96, 485 C/mol e¯) (1.09 V-0.54 V)=(2)(96, 485 C) (0.55 J/C) (The unit conversions and cancellations are implicit, but 1 V = 1 J/C.) Then, the value of -106,134 J is converted to kilojoules and reported to two significant digits: -110 kJ. 2Fe3+(aq) +3Sn(s)→ 2Fe(s) + 35n²+(aq) Express the energy change in kilojoules to two significant figures. ▸ View Available Hint(s) AG= ΜΕ ΑΣΦ Submit Previous Answers Part C ? kJ Incorrect; Try Again Al Study Tools Looking for some guidance? Let's work through a few related practice questions before you go back to the real thing. This won't impact your score, so stop at anytime and ask for clarification whenever you need it. Ready to give it a try? Start O2(g) + 2H2O(l) +2Cu(s) 40H(aq) +2Cu2+(aq) Express the energy change in kilojoules to one significant figure. ▸ View Available Hint(s) AGi- ΜΕ ΑΣΦ Submit Previous Answers ? × Incorrect; Try Again Al Study Tools Looking for some guidance? Let's work through a few related practice questions before you go back to the real thing. kJ
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