All Questions
Tagged with electrochemistry water
49
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Neglected partial pressures dependence of water splitting
I am studying electrochemical water splitting and I have a huge doubt. The standard redox potential for the total reaction is 1.23 V, but this is in standard conditions, where the hydrogen and oxygen ...
2
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45
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Alternative pH sensing methods?
I am looking for alternative methods to measure the pH of water (swimming pools, tap water, rivers,...) with (ideally) the following properties:
Durable: no maintenance or calibration required for 5-...
- 21
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163
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How do the ions in electrolytes lead to lower dielectric constants compared to pure water?
I am interested in the salts used in the gel electrophoresis buffers. As I understand it, one of their roles is to change the conductivity of the medium, because otherwise the electric field would be ...
- 119
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Can deuterium be separated from heavy water via electrolysis? It is an isotope of hydrogen, so I guess it should act in the same way?
I was wondering if it is possible to separate deuterium from heavy water via electrolysis.
Also, is this the way deuterium gas is obtained on an industrial scale, or are there better methods?
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NiCr wire and water
Suppose I'm a very impatient person and I want to heat up water by getting rid of the layer of isolation between a NiCr wire and the water (e.g. skinny-dipping). The idea is that, since the wires can ...
2
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Is there a difference in electrolsys rate limiting effects between electrodes of different area if one reverses the electrical polarity?
If one has two concentric stainless steel tubes with the small one being 1/2 the circumference and inside the other, and KOH for the electrolyte, then given the different surface areas between the ...
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Can stainless steel be electrically insulated with (oven-dried) Sodium Silicate Solution?
Can I electrically insulate stainless steel by painting Sodium Silicate solution on it and heating it to 200C for 30min or so?
The solution should be conductive, and I've been told (to be verified) ...
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Electrolysis of water using different kind of electrode and electrolyte safest as possible for splitting demonstration
I am planning to electrolyze water for an experiment. However, I have limited resources and want to do it as safely as possible
The resources that I have:
$\pu{12 V}$ DC battery
Graphite (in the ...
- 11
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4
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In electrolysis, why does each atom wait to turn into gas until they reach a particular electrode?
More specifically why don't bubbles of both oxygen and hydrogen appear everywhere?
If the electricity just breaks apart bonds wouldn’t the hydrogen and oxygen just immediately turn into gas and bubble ...
- 273
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464
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How does strong acids conduct electricity in water?
How do strong acids conduct electricity in water?
I have just studied ionization of water and I'm confused about some points.
First: I know that water ionizes in a very small amount ($10^{-14}$) so ...
- 29
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4
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Explanation for a basic decomposition of water experiment
My son is trying to write a conclusion for a basic decomposition of water experiment using a 9 V battery (with a test tube placed over each terminal) placed inside a salt water solution. The results ...
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2
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Does changing the electrolyte concentration in the electrolysis of water affect the speed that hydrogen gas is produced at the cathode?
I am currently completing a Year 12 Extended Practical Investigation. Due to the lock-down restrictions we are unable to complete our own practical experiment and have been given sample answers with ...
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8k
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What happens when you put a battery in saltwater? [closed]
If somebody puts a battery in a salt solution, what path do the electrons take?
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2
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208
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Protons and osmotic potential
In a hypothetical enclosed membrane only permeable to water (including hydronium), where inside the pH is lower than the outside, would water move inside?
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Does anyone know a database that shows the effect of electrolyte concentration on the production of hydrogen gas during electrolysis of water?
I'm currently studying in the International Baccalaureate model. This high school model asks their students to do an individual work called the Internal Assessment. One of the subjects I study is ...
