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Use the standard reduction potentials shown here to answer the questions. A copper, Cu(s), electrode is immersed in a solution that is 1.00 M in ammonia, NH3, and 1.00 M in tetraamminecopper(II). [Cu(NH3)4]2+. If a standard hydrogen electrode is used as the cathode, the cell potential, Excell, is found to be 0.072 V at 298 K. Reduction half-reaction E (V) Cu2+(aq) + 2e→Cu(s) 0.337 2H+ (aq) + 2e H2(g) 0.000 Part A Based on the cell potential, what is the concentration of Cu2+ in this solution? Express your answer to one significant figure and include the appropriate units. ▸ View Available Hint(s) [Cu2+] = 2×10-14 M Submit Previous Answers Part B Correct Because of the logarithm function, this answer actually has just one significant figure. However, it is better to express it to three significant figures because it will be used in the calculation for Part B. Based on these data, what is the value of the formation constant, Kr, of [Cu(NH3)4]²+ ? Express the formation constant numerically using one significant figure. ▸ View Available Hint(s) K₁ = ΜΕ ΑΣΦ ? Submit

Use the standard reduction potentials shown here to answer the questions. A copper, Cu(s), electrode is immersed in a solution that is 1.00 M in ammonia, NH3, and 1.00 M in tetraamminecopper(II). [Cu(NH3)4]2+. If a standard hydrogen electrode is used as the cathode, the cell potential, Excell, is found to be 0.072 V at 298 K. Reduction half-reaction E (V) Cu2+(aq) + 2e→Cu(s) 0.337 2H+ (aq) + 2e H2(g) 0.000 Part A Based on the cell potential, what is the concentration of Cu2+ in this solution? Express your answer to one significant figure and include the appropriate units. ▸ View Available Hint(s) [Cu2+] = 2×10-14 M Submit Previous Answers Part B Correct Because of the logarithm function, this answer actually has just one significant figure. However, it is better to express it to three significant figures because it will be used in the calculation for Part B. Based on these data, what is the value of the formation constant, Kr, of [Cu(NH3)4]²+ ? Express the formation constant numerically using one significant figure. ▸ View Available Hint(s) K₁ = ΜΕ ΑΣΦ ? Submit

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter18: Electrochemistry
Section: Chapter Questions
Problem 159MP: A galvanic cell is based on the following half-reactions: In this cell, the copper compartment...
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Use the standard reduction potentials shown here to answer the questions. A copper, Cu(s), electrode is immersed in a solution that is 1.00 M in ammonia, NH3, and 1.00 M in tetraamminecopper(II). [Cu(NH3)4]2+. If a standard hydrogen electrode is used as the cathode, the cell potential, Excell, is found to be 0.072 V at 298 K. Reduction half-reaction E (V) Cu2+(aq) + 2e→Cu(s) 0.337 2H+ (aq) + 2e H2(g) 0.000 Part A Based on the cell potential, what is the concentration of Cu2+ in this solution? Express your answer to one significant figure and include the appropriate units. ▸ View Available Hint(s) [Cu2+] = 2×10-14 M Submit Previous Answers Part B Correct Because of the logarithm function, this answer actually has just one significant figure. However, it is better to express it to three significant figures because it will be used in the calculation for Part B. Based on these data, what is the value of the formation constant, Kr, of [Cu(NH3)4]²+ ? Express the formation constant numerically using one significant figure. ▸ View Available Hint(s) K₁ = ΜΕ ΑΣΦ ? Submit
Transcribed Image Text:Use the standard reduction potentials shown here to answer the questions. A copper, Cu(s), electrode is immersed in a solution that is 1.00 M in ammonia, NH3, and 1.00 M in tetraamminecopper(II). [Cu(NH3)4]2+. If a standard hydrogen electrode is used as the cathode, the cell potential, Excell, is found to be 0.072 V at 298 K. Reduction half-reaction E (V) Cu2+(aq) + 2e→Cu(s) 0.337 2H+ (aq) + 2e H2(g) 0.000 Part A Based on the cell potential, what is the concentration of Cu2+ in this solution? Express your answer to one significant figure and include the appropriate units. ▸ View Available Hint(s) [Cu2+] = 2×10-14 M Submit Previous Answers Part B Correct Because of the logarithm function, this answer actually has just one significant figure. However, it is better to express it to three significant figures because it will be used in the calculation for Part B. Based on these data, what is the value of the formation constant, Kr, of [Cu(NH3)4]²+ ? Express the formation constant numerically using one significant figure. ▸ View Available Hint(s) K₁ = ΜΕ ΑΣΦ ? Submit
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