Voltmeter + 0.46 V Flow of anions Flow of cations Cu anode NO3 Na* Ag cathode Salt bridge (NANO3) Cu2+ Porous Ag* plug NO3 NO3 1 M solution of copper (II) nitrate (Cu(NO3)2) 1 M solution of silver nitrate (AGNO3) Figure 17.4 In this standard galvanic cell, the half-cells are separated; electrons can flow through an external wire and become available to do electrical work.

Chemistry: An Atoms First Approach
2nd Edition
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Steven S. Zumdahl, Susan A. Zumdahl
Chapter17: Electrochemistry
Section: Chapter Questions
Problem 137CWP: Consider a galvanic cell based on the following half-reactions: a. What is the standard potential...
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Why is a salt bridge necessary in galvanic cells like the one shown?

Voltmeter
+ 0.46 V
Flow of anions
Flow of cations
Cu anode
NO3
Na*
Ag cathode
Salt bridge (NANO3)
Cu2+
Porous
Ag*
plug
NO3
NO3
1 M solution of
copper (II) nitrate
(Cu(NO3)2)
1 M solution of
silver nitrate
(AGNO3)
Figure 17.4 In this standard galvanic cell, the half-cells are separated; electrons can flow through an external wire
and become available to do electrical work.
Transcribed Image Text:Voltmeter + 0.46 V Flow of anions Flow of cations Cu anode NO3 Na* Ag cathode Salt bridge (NANO3) Cu2+ Porous Ag* plug NO3 NO3 1 M solution of copper (II) nitrate (Cu(NO3)2) 1 M solution of silver nitrate (AGNO3) Figure 17.4 In this standard galvanic cell, the half-cells are separated; electrons can flow through an external wire and become available to do electrical work.
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