All Questions
Tagged with electrochemistry organic-chemistry
29
questions
3
votes
1
answer
157
views
Electrolysis of benzyl alcohol in methanol
I am conducting following electrochemical experiment on Au wires in organic medium:
I suppose the anodic reaction goes through a benzaldehyde intermediate:
The cathodic reaction is hydrogen ...
- 383
1
vote
1
answer
155
views
Standard electrode potentials
I know that many substances have their own standard electrode potential and they can be arranged in he electrochemical series. For example, the standard electrode potential of iron is -0.440V.
Since ...
2
votes
0
answers
45
views
Why is sodium p-toluenesulfonate used as a supporting electrolyte in polypyrrole synthesis?
First, some preamble: I'm currently working on my thesis, which is about the electropolymerization of polypyrrole onto carbon fiber felt. My methodology, for the most part, follows a paper by one of ...
- 21
4
votes
1
answer
194
views
Methods for immobilization of DNA on gold surfaces?
I've been looking for methods for immobilizing 5'-Thiol modified dsDNA on gold slides. Most of what I've come across suggests using DTT followed by a desalting step or using TCEP. However, I haven't ...
- 79
0
votes
0
answers
618
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How do longer chains and more cis-double bonds affect melting point and viscosity of fatty acids?
In fatty acids, longer chains increase the melting point (and viscosity) by increasing London dispersion forces. Inversely, more double bonds decrease the melting point.
What happens when both chain ...
- 117
2
votes
0
answers
59
views
Are there any chemistry research classification systems?
There are research classification systems for mathematics (MSC) and physics (PACS and subsequently PhySH) which help the researchers to navigate through codes composed by letters/numbers made by ...
0
votes
0
answers
284
views
Table of viscosity of water vs temperature
Above is the table for water physical properties table with temperature related with a,v,b,Pr,Ra factor. This table has temperature only from 0 to 100. May I ask if there is a full table for this with ...
1
vote
1
answer
107
views
Cannizzaro reaction via electrolysis
As cannizzaro reaction reaction is a redox reaction carried by adding base to an aldehyde, is it possible to carry out the reaction using electrolysis where graphite anode and copper cathode is used. ...
- 164
1
vote
0
answers
53
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Calculating the electric potential of a fruit battery
In a fruit battery, if I am using a reactive metal electrode for the cathode but the cathode reaction is the reduction of the hydrogen ions (in the acid of the fruit), how can the type of the cathode ...
- 19
0
votes
0
answers
356
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About the acidity of phenytoin
Can you explain why phenitoin is weak acid even though nitrogen is base?
Does carbonyl group always make structure acid?
If this structure doesn't have carbonyl group, would it be base not acid?
- 29
1
vote
0
answers
68
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phenolsulphonic acid
Phenolsulfonic Acid( PSA) is produced after sulphonation of Phenol at around 100 degrees. They use this product in tinplating.
Once a stable PSA is formed after sufficient reaction , unreacted ...
- 11
-2
votes
2
answers
603
views
What is the essence of chemistry? [closed]
I am an engineering student who loves physics but didn't quite enjoy chemistry.
a. When I was in high school chemistry to me was something not as inspiring as physics but in which I couldn't solve ...
- 189
3
votes
1
answer
83
views
Carboxyllic acid Test
I'm currently in high school doing a project in chemistry. So I had to make a project where concepts from physical chemistry will be used alongside organic chemistry.
After going through my book I ...
- 31
-1
votes
1
answer
169
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Why can't two 3° free radicals combine?
In Kolbe Electrolysis, my teacher told that when a 1° or 2° free radical is used, we get alkanes through dimerisation. Why wont dimerisation occur for a 3° one??
- 23
1
vote
0
answers
409
views
Calculating ionic strength and pH of a buffer solution [closed]
Im trying to calculate ion strength and pH of solution.
Components of the solution:
47 ul of 1000 pmol DNA in Elution Buffer (10 mM Tris-HCl pH 8.5) was bound to 3 ul of 10 µM YoYo1 (flourescent dye) ...
- 19
4
votes
1
answer
673
views
How do I remove tetrabutylammonium perchlorate from an organic synthesis?
I am trying to remove tetrabutylammonium perchlorate (TBAP) from an organic synthesis where TBAP was used as an electrolyte. I am working with compounds containing the amide group. I have used flash ...
2
votes
2
answers
2k
views
Matching the NMR to a compound
I was given a molecule that I had to identify the NMR of. The molecule is 2-methylpent-1-ene (shown below):
The correct NMR spectra for this molecule is:
My question is, why is this the right ...
- 29
3
votes
1
answer
2k
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How does PEDOT:PSS work (mechanism) in Organic Electrochemical Transistors?
I have a question about the fairly fundamental theory behind the application of PEDOT:PSS in an organic electrochemical transistor (OECT) device.
As at least I understand it, the ...
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
-3
votes
1
answer
47
views
Balancing simple Redox equation [closed]
How would you balance these two redox equations? Would you add a '2' in front of Pt2+ and a '2' in front of H+ ?
- 11
13
votes
1
answer
9k
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Cyclic Voltammetry - HOMO and LUMO levels
I'm a physicist, so I apologize if these are obvious questions.
I've carried out CV measurements on a few different types of material (with a ferrocene reference). I am interested in determining the ...
- 590
-3
votes
1
answer
73
views
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 ...
1
vote
1
answer
342
views
Chemisorption vs Physisorption?
What is the fundamental difference between chemical adsorption and physical adsorption.
Why do some compounds chemisorb and others physisorb?
- 11
1
vote
1
answer
126
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Electrochromic properties of ethyl viologen
I came across this article on electrochomic displays. It mentions Ethyl Viologen as an electochromic chemical. I would like to attempt an experiment to showcase it's electrochomic properties but don't ...
- 113
4
votes
0
answers
1k
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An alternate purification process for sugar separation form bee honey?
Bee honey contains 75% sugars (Fructose, Glucose, Maltose, Sucrose and others), some water and low amount of different compounds (up to 5%) Wiki.
Basic purification is done by addition of phosphoric ...
- 2,205
1
vote
0
answers
139
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Supersaturated conversion of sodium acetate utilizing electricity
Is it possible to use electricity to take crystallized sodium acetate back to a supersaturated solution?
- 11
0
votes
1
answer
480
views
Why don't B, C, Si, have ionic forms? [closed]
Also, why can some elements such as $\ce{Fe}$ have different ionic forms such as $\ce{Fe^{2+}}$ and $\ce{Fe^{3+}}$? What determines each form?
- 195
5
votes
1
answer
2k
views
Voltage vs current density - why are both parameters important to control an electrochemical reaction?
In many electrochemistry scholarly articles/studies they talk about certain specific reactions occurring at certain voltage potentials, while in other articles they talk about current density as the ...
- 51
5
votes
1
answer
230
views
Thought Experiment: Applying a high frequency high voltage to methane
I am in the process of constructing a kitchen waste digester (vegetable/fruits) from which, hopefully, over time adequate methane may be collected to burn. The digester won't be complete for several ...
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