An electrochemical cell consists of a standard hydrogen electrode and a copper metal electrode. (a) What is the potential of the cell at 25°C if the copper electrode is placed in a solution in which [Cu2+] = 3.0×10-4 M? 49 0.21 (b) If the copper electrode is placed in a solution of 0.43 M NaOH that is saturated with Cu(OH)2, what is the cell potential at 25°C? For Cu(OH)2, Ksn = 1.6x10-19. 4.0 (c) The copper electrode is placed in a solution of unknown [Cu2+ ]. The measured potential at 25°C is 0.210 V. What is [Cu2+ ]? (Assume Cu2+ is reduced.) 4.0 M.
An electrochemical cell consists of a standard hydrogen electrode and a copper metal electrode. (a) What is the potential of the cell at 25°C if the copper electrode is placed in a solution in which [Cu2+] = 3.0×10-4 M? 49 0.21 (b) If the copper electrode is placed in a solution of 0.43 M NaOH that is saturated with Cu(OH)2, what is the cell potential at 25°C? For Cu(OH)2, Ksn = 1.6x10-19. 4.0 (c) The copper electrode is placed in a solution of unknown [Cu2+ ]. The measured potential at 25°C is 0.210 V. What is [Cu2+ ]? (Assume Cu2+ is reduced.) 4.0 M.
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 120AE
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![An electrochemical cell consists of a standard hydrogen electrode and a copper metal electrode.
(a) What is the potential of the cell at 25°C if the copper electrode is placed in a solution in which [Cu2+ ] = 3.0x10-4 M?
0.21
X V
(b) If the copper electrode is placed in a solution of 0.43 M NaOH that is saturated with Cu(OH)2, what is the cell potential at 25°C? For Cu(OH)2, Ken = 1.6x10-19.
4.0
(c) The copper electrode is placed in a solution of unknown [Cu2+]. The measured potential at 25°C is 0.210 V. What is [Cu2+ ]? (Assume Cu2+ is reduced.)
4.0
(d) If you wish to construct a calibration curve to show how the cell potential varies with [Cu2+], what should you plot to obtain a straight line?
O 8 versus [H*]
O [Cu2+] versus log [H+]?
O 8° versus [Cu2+]
O [Cu2+] versus [H+]
O 8 versus logl
[Cu²+])
O 8 versus
What will the slope of this line be if the temperature is 25°C?
4.0](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd440ac26-e0f4-4e43-94a3-dbbed55b6a80%2F6c5ee750-a871-4951-bea8-3b5268bf7e2d%2Ffvy8idn_processed.png&w=3840&q=75)
Transcribed Image Text:An electrochemical cell consists of a standard hydrogen electrode and a copper metal electrode.
(a) What is the potential of the cell at 25°C if the copper electrode is placed in a solution in which [Cu2+ ] = 3.0x10-4 M?
0.21
X V
(b) If the copper electrode is placed in a solution of 0.43 M NaOH that is saturated with Cu(OH)2, what is the cell potential at 25°C? For Cu(OH)2, Ken = 1.6x10-19.
4.0
(c) The copper electrode is placed in a solution of unknown [Cu2+]. The measured potential at 25°C is 0.210 V. What is [Cu2+ ]? (Assume Cu2+ is reduced.)
4.0
(d) If you wish to construct a calibration curve to show how the cell potential varies with [Cu2+], what should you plot to obtain a straight line?
O 8 versus [H*]
O [Cu2+] versus log [H+]?
O 8° versus [Cu2+]
O [Cu2+] versus [H+]
O 8 versus logl
[Cu²+])
O 8 versus
What will the slope of this line be if the temperature is 25°C?
4.0
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