All Questions
Tagged with electrochemistry water
49
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Why is the ionic product of water $K_w$ the same in acid, water, and alkali? [duplicate]
Seen on the web:
The concentration of [H+] and [OH−] both vary based on the the composition (acid/alkaline) of the solution, but the remarkable thing is that their product does not. When [H+] goes ...
Rwi1
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1
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368
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Why does H2O electrolysis produce O2 on the anode instead of H2O2
If the oxidation of $\ce{H2O}$ produces $\ce{OH-}$ ions and the anode separates electrons from them leaving neutral $\ce{OH}$ molecules, why don't they bind to each other covalently?
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1
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Electrolysis of water: Which equations to use? (IB Chem)
There is a list of standard electrode potentials at 298 K from the p. 23 of IB Data Booklet 2016. Which of the following equations (forward/backward reactions), from the two possible ones involving ...
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2
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0
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What is the ideal temperature and pressure to crack water?
Using sun mirrors and solar cells for electricity. What temperature, pressure and voltage ideal for cracking water.
Source: NPR
Source
Would it take more or less electricity to crack water under ...
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12
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6
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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 ...
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3
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1
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713
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Calculating the standard reduction potential for the oxidation of water
I was working with Latimer and Frost diagrams for oxygen when I came across what seems to me a contradiction.
From the Latimer diagram for oxygen below, we know the standard reduction potential for ...
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2
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1
answer
10k
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Best Settings for Electrolysis of water
I want to electrolyze water as a personal project, but I have found conflicting power recommendations on google. Some sources recommended a higher voltage, claiming that higher amps will just destroy ...
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2
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water in redox reactions [closed]
why water can't react as anode , with metals , in a redox reaction?
while studying electrochemistry, i passed through a table with certain metals , all having voltage (potential energy) less than ...
2
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1
answer
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Water electrolysis - what is happening to an iron anode?
So I made an experiment to find a good electrolyte for a water electrolysis.
I tried citric acid, which turned out to not produce any gases at the anode, I tried sodium hydroxide, which turned out to ...
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1
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Corrosion rate of a metal in a liquid in relation to the size of electric current
I am trying to determine the formula for calculating the corrosion rate of a metal in a liquid in relation to the size of electric current that is passed between 2 metal plates. For example: we have 2 ...
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What gases would be produced from the electrolysis of distilled water and sodium bicarbonate? [closed]
I have two questions: one practical question and one conceptual question.
1) I'm trying to set up an electrolysis experiment and I am trying to make sure I am going to end up with the gases that I ...
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2
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2
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1k
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Electrolysis of water - why not pure water?
In the electrolysis of water, $\ce{H2O}$ molecules are being reduced at the cathode (forming $\ce{H2}$ and $\ce{OH-}$) and oxidized at the anode (forming $\ce{O2}$ and $\ce{H_3O+}$).
It is said that:
...
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3
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1
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Electrolysis of water with aluminum at the negative pole
I am doing electrolysis of water to collect the hydrogen and I'm running into a problem: on the positive side I'm using graphite from a pencil (I cannot use any other material because it corrodes too ...
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3
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2
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What exactly does κ stand for in this equation connecting solubility and molar conductivity?
I came across the following equation while studying electrochemistry ("Physical Chemistry" by Wallwork and Grant):
The solubility $s$ of a sparingly soluble salt can be determined from conductivity ...
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Water side-reactions in organic electrochemistry (redux) [closed]
(note: this is a reposting of part of my original post which I was told had too many questions in one post)
Please bear with me as I am a chemistry newbie, but I am autistic and have recently ...
