Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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A voltaic cell is constructed in which the anode is a Ni|Ni2+ half cell and the cathode is a Hg|Hg2+ half cell. The half-cell compartments are connected by a salt bridge.

(Use the lowest possible coefficients. Be sure to specify states such as (aq) or (s). If a box is not needed, leave it blank.)

The anode reaction is:

    +              +    



The cathode reaction is:

    +              +    



The net cell reaction is:

    +              +    



In the external circuit, electrons migrate 

 

 the Ni|Ni2+ electrode 

 

 the Hg|Hg2+ electrode.

In the salt bridge, anions migrate 

 

 the Hg|Hg2+ compartment 

 

 the Ni|Ni2+ compartment.

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