All Questions
Tagged with electrons electrochemistry
76
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
0
answers
24
views
Degradation via electrolysis and electrode surface area
What is the relationship between electrode surface area and processes such as electrolysis/electrode polarization?
Let's say for example I want a fixed electric field between two electrodes in a ...
5
votes
1
answer
81
views
Correct Interpretation of Apparent Charge Transfer Coefficients
Good day guys,
I was looking over some $i$ vs $\eta $ for a redox reaction over a copper cathode, the cell has $\ce{LiBf4}$ in THF as the electrolyte. The main reaction taking place is:
$$\ce{N2 + 6 ...
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 This model is quite outdated from my understanding, but it is ...
0
votes
2
answers
39
views
Electrolysis to refine metals
Why does the cathode get bigger and the anode smaller when we use copper electrodes for the electrolysis of Copper Sulphate? Why does the anode not receive electrons from the anions (e.g Sulphate and ...
13
votes
3
answers
2k
views
Do electrons really hang around the electrode while ions go take a swim?
This answer to this post addresses "what happens if you dip a single zinc electrode into some electrolyte solution." It explains that
However, though the zinc ion can diffuse through the ...
-3
votes
1
answer
68
views
Aqueous electrons in electrochemical cells [closed]
In the context of a zinc-copper electrochemical cell, zinc atoms at the anode are oxidized, releasing electrons and forming zinc ions that dissolve into the solution ($\ce{Zn(s) -> Zn^{2+}(aq) + 2e-...
2
votes
1
answer
96
views
Do solvated electrons short circuit the electrolysis of liquid ammonia
If attempting the electrolysis of liquid ammonia using NaNH2 as an electrolyte. It is understood that Na+ will form solvated electrons. I understand that these solvated electrons can dramatically ...
-2
votes
2
answers
123
views
How do electrons travel through a fuel cell or flow battery with multiple cells?
I understand that if you have a fuel cell or flow battery with a single cell that electrons will go from the electrode and through an external circuit across the load which the fuel cell / flow ...
-5
votes
1
answer
90
views
Is the given figure correct? Does the electron really flow out as depicted by the arrow? [closed]
Someone up here questioned about the figure and that the arrow is pointless and doesnt make sense? Or is it?
-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 ...
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 ...
-1
votes
1
answer
134
views
Can use lead(II) oxide instead of lead(IV) oxide in car battery?
Question: If the discharge input equation $\ce{PbO2}$ is replaced by $\ce{PbO}$, will the battery still work? I think the product will not be water anymore but hydrogen gas. I am asking this question ...
0
votes
1
answer
274
views
How does high voltage on the electrodes ionize a gas?
I was studying cathode ray experiment and there the electrons were obtained by ionisation of the gas inthe tube by the high voltage on the electrodes. So how does this happen?
1
vote
1
answer
72
views
Thickness of proton exchange membrane (Nafion)?
I am looking into using a proton exchange membrane for a bio-energy cell experiment. Previous scholars have been using Nafion as a PEM to place between the anode and cathode (air-cathode). the ...