A student was asked to set-up a galvanic cell in the laboratory. He used two copper electrodes, one with an electrolyte solution of lower concentration. He then connected the two electrodes by a conductive wire with a voltmeter. However, he noticed that the reaction eventually stopped as there was no longer a voltage reading. What caused the halting of the reaction?
A student was asked to set-up a galvanic cell in the laboratory. He used two copper electrodes, one with an electrolyte solution of lower concentration. He then connected the two electrodes by a conductive wire with a voltmeter. However, he noticed that the reaction eventually stopped as there was no longer a voltage reading. What caused the halting of the reaction?
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 89AP
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A student was asked to set-up a galvanic cell in the laboratory. He used two copper electrodes, one with an electrolyte solution of lower concentration. He then connected the two electrodes by a conductive wire with a voltmeter. However, he noticed that the reaction eventually stopped as there was no longer a voltage reading. What caused the halting of the reaction?
a.
The use of identical electrodes for the anode and cathode.
b.
The build-up of charge due to absence of salt bridge.
c.
The presence of the voltmeter in the circuit.
d.
None of the above.
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