All Questions
Tagged with electrons electrochemistry
76
questions
0
votes
0
answers
33
views
What Ion gets reduced in this aqueous electrolysis?
In an electrolysis of tin(II) iodide ($\ce{SnI2}$) with led cathode and nickel anode, why is it that the tin ion gets reduced and not the nickel ion?
- 1
-1
votes
1
answer
151
views
What do electrons usually do when lead acid battery is idle?
Lead acid batteries operation are governed by Redox reactions for charging and discharging. But, what do electrons usually do when lead acid battery is idle? And why?
Assumptions:
Say more ...
- 103
0
votes
1
answer
5k
views
When surface area of electrodes is increased, why does the current in the galvanic cell increase?
I did a lab in galvanic cells where I changed the surface area. As a result, the current increased, but I don't really understand why. I guessed it was because more are means that more ions from the ...
12
votes
6
answers
592
views
Is there any electronic component to water conductivity?
Answers to Decrease in temperature of a aqueous salt solution decreases conductivity indicate that the electrical conductivity of salt solutions arises from the mobility of ionic species and therefore ...
- 5,900
-1
votes
1
answer
663
views
Why electrons are attracted by cathode in Voltaic/Galvanic cell
I studied that in the above setup electrons are attracted by Cu because of their reduction potential but they don't involve in reaction because of the d-bands of the electronic structure so Hydrogen ...
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
3
votes
1
answer
189
views
Are my intuitions about how batteries work right? [closed]
Being really fascinated by how electricity actually works, I started studying batteries.
I initilally understimated the complexity of this apparently-simple objects, and thorugh studies and researches ...
8
votes
0
answers
392
views
What exactly is an "electron-sponge"?
What exactly an "electron-sponge" [behavior/action/property/system] nickname is, and what makes a material an "electron-sponge" (preferably, quantitatively)?
From what I found, it's typically a ...
- 38.4k
2
votes
0
answers
70
views
Do some electrons transfer if I connect with a conductor 2 solid pieces of 2 different elements with different electronegativity? [closed]
Making some researches to answer my last post, I found this article.
It explains that when a piece of zinc and a piece of copper are connected with a conductor, since copper is more elctronegative ...
2
votes
2
answers
2k
views
Why does copper form bubbles in vinegar in this situation?
I watched this video in which the host tries to show the principles behind the voltaic pile.
The host first immersed zinc in vinegar and bubbles are observed forming around zinc. I've learned that ...
-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
-1
votes
1
answer
2k
views
Why is the standard reduction potential of an anode negative in a galvanic cell?
It makes not intuitive sense to me why something can have a negative voltage , I understand the concept of voltage drop , but voltage is not being dropped in the anode so why would it be negative ?
- 394
21
votes
2
answers
644
views
Some materials emit more photoelectrons than others - why?
I've been experimenting with some materials by changing the wavelength of the incident light on the material and detecting photoelectrons, like in the diagram below:
I might get a response that looks ...
- 590
0
votes
3
answers
3k
views
Number of electrons transferred & Gibbs free energy
To determine the number of electrons transferred for the following reaction:
$$\ce{CH3OH + \frac{3}{2} O2 -> CO2 + 2 H2O}$$
I found the half reactions to be:
$$\text{Anode: } \ce{CH3OH + H2O -&...
1
vote
0
answers
63
views
How do I increase the amount of electrons transferred in a battery?
I made a simple battery with $\ce{Al}$ as anode electrode with $\pu{0.7 M}$ aluminum sulfate electrolyte. Platinum is my cathode electrode with $\pu{2 x 10^-4 M}$ $\ce{KOH}$ solution. I am generating $...
- 864