Electrochemistry is the branch of physical chemistry that studies the relationship between electricity, as a measurable and quantitative phenomenon, and identifiable chemical change, with either electricity considered an outcome of a particular chemical change or vice versa. These reactions involve electric charges moving between electrodes and an electrolyte (or ionic species in a solution).
Questions tagged [electrochemistry]
279 questions
3
votes
2 answers
Confusion about conduction of electricity in a solution
I'm trying to understand conduction of electricity in a solution. Is it correct that anions give their extra electrons to the anode, which transfers the electrons to the cathode, where the cations receive them?
In addition - if my understanding is…
blz
- 283
1
vote
1 answer
What causes the flow of electrons from anode to cathode in a Daniell cell?
In a standard galvanic cell, I understand that electrons flow from the anode to the cathode. For example, in a Daniell cell, electrons flow from the Zn anode to the Cu cathode. Before the two half-cells are connected (open circuit), they are each…
1
vote
0 answers
Why does current flow in an electrolytic cell?
Many explanations of current flow in electrolytic cells will state that electrons flow from the external power source into the cell (via the cathode). But surely this current flow would stop if there were no reduction at the cathode (which removes…
Vandelay
- 11
1
vote
1 answer
Faradays law of electrolysis history
what actually farday predict about electric charge,would he measured the value of that.i could not understand that how he predict about the existence of charge on atomic particles from his experiment of electrolysis ?
1
vote
1 answer
Can anyone explain this demonstration with a helium balloon?
See the YouTube video (click) named "Testing the Magnetic Nature of MagneGas.mp4".
A helium balloon is attracted to a metal bar.
Craig Feinstein
- 980
1
vote
2 answers
Why do some chemicals take electrons from other chemicals?
How can some chemicals, if they have an equilimbrium of electrons, take away electrons from other chemicals?
One example I believe is placing a small amount of gallium on top some alluminum and watching the alluminum melt.
Why does the gallium, if…
Thurarcier
- 41
1
vote
0 answers
How to work out bubble size and rising velocity in turbulent flow?
Is there a way to determine bubble size and rising velocity in turbulent flow? I know stokes law but this is only valid for laminar flow.
Katherine
0
votes
1 answer
How does Electron flow in Daniell cells in series look like?
After taking a look at this question: What causes the flow of electrons from anode to cathode in a Daniell cell? i was quite satisfied with answer provided there. One question that remained for me was how the electron flow would look in 2 of those…
Hanni
- 1
0
votes
1 answer
Electrode potential of an electrode
Suppose we have a voltic cell. In one half cell, we have a zinc electrode (or any other) and in the other we have a hydrogen electrode (or any other).
Now, if I say that the electrode potential of zinc is 5 volts, would it mean that it (5 volts) is…
Rafique
- 1,159
0
votes
0 answers
Collision Frequency in Liquids
I’m trying to quantify the current produced due to electrolysis of an electrolytic solution.
What physical model can I use to determine the mean velocity of each ion species in my solution, taking into account collisional effects in the liquid?
My…
Joeseph123
- 749
0
votes
1 answer
why zinc can't move electrons to copper directly without any solution?
We need an electric solution for the electrons to move from the anode to the cathode but why ?
Red Wane
- 1
0
votes
1 answer
Electricity, and Gases
Electricity can be conducted by an ionic compound dissolved in water, and when it is a liquid. Can a gaseous ionic compound conduct electricity as well? A metal cab conduct electricity when it is solid, and liquid. Can a metal conduct electricity…
0
votes
2 answers
Why is it that the cathodic battery symbol in an equivalent battery circuit doesn't point in reverse for an open circuit case?
I've been thinking about batteries a whole lot, and I've uncovered why the battery symbol looks like a pair of cap-like things in circuit diagrams: it's modeled as two cap-like things using an equivalent circuit diagram:
We see here that the two…
Andres Salas
- 658
-1
votes
2 answers
What happens when I connect the negative terminal of a power source to a metal electrode ? Do electrons flow into or out of the metal electrode?
I am basically trying to understand a concept in electrochemistry. I have a power source and am connecting the negative end of the power source to a working electrode (metal electrode). Will electrons flow out or into the metal electrode?
Details: I…
