A voltaic cell is constructed in which the anode is a Co | Co 2+ half cell and t
ID: 1045952 • Letter: A
Question
A voltaic cell is constructed in which the anode is a Co|Co2+half cell and the cathode is a Sn|Sn2+ half cell. The half-cell compartments are connected by a salt bridge.
(Use the lowest possible coefficients. Use the pull-down boxes 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 _____fromto the Sn|Sn2+ electrode _____fromto the Co|Co2+ electrode.
In the salt bridge, anions migrate _____fromto the Sn|Sn2+compartment _____fromto the Co|Co2+ compartment.
Explanation / Answer
anode reaction : Co (s) -------------> Co2+ (aq) + 2e-
cathode reaction : Sn2+ (aq) + 2e- -------------------> Sn (s)
net cell reaction : Co (s) + Sn2+ (aq) ----------------> Co2+ (aq) + Sn (s)
In the external circuit electrons migrate from Co|Co2+ electrode to Sn|Sn2+ electrode
In the salt bridge anion migrates from Sn|Sn2+compartment to Co|Co2+ compartment
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