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?

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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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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