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Grade: 12
        
What is the effect of external EMF in the function of Daniel cell??
2 months ago

Answers : (2)

Arun
22809 Points
							
If the cell is not set up reversibly, (for instance most common galvanic cells (aka 'batteries') are set up for no charging) there is no chemical reaction to make use of the voltage difference, and the amps will increase until the voltage resistance drop into and through the electrolyte in the cell matches the external applied voltage
2 months ago
Vikas TU
9163 Points
							
Dear student 
if Ew>E, then that also means that
RT/nFln[([Ox]w / [Red]w)] > [RT/nF] ln([Ox]/[Red])
Finally, you get that this situation implies an increase of Ox at the expense of Red, which is what you would expect from an electrolytic cell - the supply of electrical energy causes electrochemical reactions.
If you apply a potential that is below E, the only difference would be that Ox would decrease and Red would increase, but the overall treatment remains the same.
2 months ago
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