All Questions
10
questions
-3
votes
1
answer
79
views
Does the cathode always attain a positive charge or is it just a convention?
Suppose I have a galvanic cell composed of two half cells, one containing Zinc electrode dipped in an electrolytic solution (say of ZnSO4) while the another one having Lithium electrode dipped in ...
0
votes
2
answers
85
views
Fundamental understanding of electrode potentials
The electrical double layer, is commonly used to describe the origins of electric potentials that is fundamental to electrochemistry. This model is quite outdated from my understanding, but it is ...
- 95
-1
votes
1
answer
143
views
Why does lead gains electrons in the cathode? [closed]
In lead(II) bromide electrolysis, lead is attracted to the cathode and gains electrons. Why does it gain electrons when losing them would be easier since its charge is +2 meaning it would need to lose ...
- 1
22
votes
3
answers
2k
views
True or false: "A used AA battery contains fewer moles of electrons than a new AA battery."
I recently took a Gen. Chem. 2 exam that contained this question. I answered false, but my professor said the answer is true. My reasoning was that any electrons that leave the anode end up at the ...
- 449
3
votes
0
answers
316
views
Why do electrons not flow through the electrolyte? [duplicate]
Why do the electrons not flow through the electrolyte instead of the external circuit in a electrolytic cell connected to an external circuit? I mean, if an electrolyte is a conductor why would the ...
- 139
-2
votes
1
answer
313
views
If two atoms "fight over" one electron, who will win? [closed]
If two atoms of different elements are both missing exactly one electron in their valence shell so that they have a charge of +1
and we place an electron between them, exactly in the middle.
Which ...
- 639
5
votes
1
answer
3k
views
In a galvanic cell where the two electrodes are in the same electrolyte solution, why do reduction and oxidation occur separately?
In a certain book, I was presented with the following solution:
An iron nail is attached by a piece of wire to a magnesium ribbon, and the iron and magnesium are placed into the same container, with ...
- 51
2
votes
2
answers
2k
views
Electrolysis of Water: Overvoltage?
I've heard from a few sources that over-voltage in a electrolysis cell for water will cause a greater heat buildup with no yield. Is this true, and if it is, why is it true? From my electronics ...
- 527
1
vote
1
answer
117
views
Placement of Electrodes for Electrochemistry?
I'm kind of curious as to the relationship between resistance and the yield of electrochemical methods. If I have my electrodes rather close together in a conductive solution the resistance will be ...
- 527
-3
votes
1
answer
254
views
What is the purpose of the solution in a galvanic cell?
In other words: What is the purpose of the solution that the electrodes are immersed in, in a galvanic cell, and is it possible to generate a current without any solution?
