Tagged Questions
Use this tag for questions relating to organic molecules and their properties (structure of organic molecules, spectroscopic properties, reaction mechanisms, stereochemistry etc). DO NOT use this tag as the only tag in your question, as this tag by itself cannot appropriately classify your question. ...
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0answers
3 views
Link between number of carbon atoms in compound and delta h when combusted
What is the link between the number of carbon atoms/ types of carbon bond in a fatty acid and the amount of energy it releases when combusted as a biofuel.
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1answer
17 views
In Diazonium Ion why does N contain 4 bonds?
Nitrogen's valenc number is 3. Sometimes it can form a co-ordinate bond by donating it's lone pair electrons. In diazonium ion N has 4 bonds, then one of those 4 bonds must be a co-ordinate bond. ...
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0answers
26 views
How do I convert Butene-2 to Butene-1?
An explanation would by greatly apprciated. As far as I know the conversion involves Markonikov Rule and Saytzeff Rule.
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2answers
20 views
Nomenclature confusion regarding carboxylate and ester
Suddenly thought about this 2 compounds that have the same(?) name? Aren't both of them methyl propanoate? How do we differentiate them apart name wise?
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0answers
18 views
discription about riemer tieman reaction [on hold]
I want to know the mechanism and the intermediate involved in riemer tieman reaction.I also want the names of the compounds involved in this reaction.
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0answers
20 views
Reaction of Alkyl halides and alcohols [on hold]
I searched for the reactions of alcohols with alkyl halides but did not find any good stuff. My professor asked me the following question.
Which one of the following is more reactive with Ethanol(...
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0answers
11 views
Rate of hydrolysis of aspirin [on hold]
I was wondering if anyone would be able to check my method for my Chemistry Internal Assessment on the Rate of hydrolysis of Aspirin.
Independent variable (I am changing): temperature (degrees ...
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0answers
21 views
How would one disassociate the carboxylic acid on the end of a perfluorooctanoic acid molecule?
This is what a perfluorooctanoic acid molecule looks like. The carboxylate on the end would normally disassociate in water because carboxylic acids are weak, but because of the fluorocarbon tail, the ...
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0answers
14 views
Ultra EVER DRY dilution [on hold]
I want to dilute an industriel coating Ultra Ever Dry (Bottom coating) wich has this composition: Acetone, Xylene and tert-Butyl acetate.
I wonder witch is the best solution to use for dilution?
...
4
votes
1answer
34 views
Regioselectivity of bromination of alkenes
Recently, in my chemistry lesson, we were discussing the mechanism of the bromination of alkenes. The teacher brought up the involvement of the cyclic bromonium intermediate. She also mentioned that ...
-1
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0answers
21 views
Is cycloalkane an isomer of alkene as they have the same general formula?
I know that cycloalkanes are a homologous series of their own and not an isomer of alkane. But does the same general formula as alkenes make them an isomer of alkene?
2
votes
1answer
62 views
Conversion of oxalic acid to malonic acid
The reagents I have used here are $\ce{LiAlH_4}$ which reduces the carboxylic groups into alcohol.Used $\ce{HIO_4}$ which breaks up the molecule into methanal. Then I applied Grignard reagent which ...
1
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0answers
17 views
Reaction of 1,3 Butadiene with HBr in the presence of peroxides
I have learnt that the reaction of 1,3 Butadiene with HBr depends on the temperature as the temperature determines whether the reaction is under kinectic control or thermodynamic control. I believe ...
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0answers
14 views
What would be the best filtering technique to filter Leachate? [on hold]
I am a student and as part of a project of mine I need to find a way to filter leachate. Would reverse osmosis and nanofiltration be the best option or are there more effective alternatives?
...
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0answers
19 views
Sn1/Sn2 reaction [on hold]
Could anyone tell me why this reaction is Sn1 and not Sn2?
Ps; there is a small mistake with the phenyl (the OH should not be there)
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0answers
13 views
How does Benzoyl Peroxide bleach coloured chemicals such as Lycopene? (As compared to Sodium Hypochlorite, conventional bleach)
I know that conventional bleach, Sodium Hypochlorite (NaClO)bleaches coloured chemicals like lycopene by breaking the conjugated pi bonds in lycopene. The O-Cl bonds in bleach causes the Cl to be ...
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0answers
22 views
What is the product of given reaction [on hold]
I have the solution
In it shows a carbocation on the right ring
But isn't it unstable as it is near the carbonyl group(I effect destabilising the carbication before ring expansion)
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1answer
28 views
-2
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0answers
28 views
Stereochemistry [on hold]
The answer to this question is option (d). Can anyone please explain the reason?
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1answer
96 views
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0answers
30 views
Reaction of hydoiodic acid with epoxide derivatives in ring opening
I have read from Morrison and Boyd (7th edition; Chapter 16; section 16.16- 16.19) that in acid catalyzed ring opening of epoxides, the nucleophile attacks at the position where the carbocationic ...
1
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0answers
27 views
Why is the intermolecular hydrogen bond between phenol and aniline stronger than the respective hydrogen bonds?
From NCERT class 12 part 1
The way I see hydrogen bonding is that it occurs due to intermolecular charge interaction. The more electronegative nitrogen/oxygen due to the inductive effect the ...
-1
votes
0answers
12 views
How does the Emission Spectrum of an element give us information about its energy levels [on hold]
When an Emission spectrum is produced the spectrum only consists of lines which were absent from the Absorption spectrum produced by the same elements atoms. How and in what ways can these individual ...
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0answers
17 views
Mechanism for formation of Quinol from a Phenolic Ether
What's the mechanism for formation of Quinol from the given phenolic substrate? The reaction seems to be an acid catalysed hydrolysis, but I'm not able to reach the final product. I guess the first ...
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0answers
15 views
Napthalene - Friedel Crafts Alkylation and Acylation [duplicate]
Where does Friedel Crafts Alkylation and Acylation occur in Napthalene? Are the reactions kinetic-thermodynamic controlled?
Here's something I came across -
While alkylation occurs at alpha ...
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0answers
25 views
Is the order necessary when writing a name for some compound? [on hold]
So I was studying for my Upcoming test and there are a lot of reactions that I've to study and memorize. They all obviously involve reactants. one such reaction I came across was,
Glucose + Acetic ...
2
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0answers
12 views
Fluorination of Carbonyl Compounds using Molybdenum Hexafluoride
What is the mechanism of halogenation of carbonyl compounds using molybdenum hexafluoride? How does it work?
Here's a reaction I came across -
Can we use it for all carbonyl compounds, or, are there ...
2
votes
1answer
30 views
Salt used in Perkin Reaction
The Perkin reaction gives an α,β-unsaturated aromatic acid by the aldol condensation of an aromatic aldehyde and an acid anhydride, in the presence of an alkali salt of the acid. Here is an a diagram ...
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0answers
13 views
Is there a specific way that the condensed structural formula of a compound must be written in?
Using hexanoic acid as an example, I can write three condensed structural formula i.e.
CH3CH2CH2CH2CH2COOH
CH5H11COOH
CH3(CH2)4COOH
Can all three of these formula be considered as the condensed ...
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votes
1answer
28 views
How to explain this structure? Need guidance [on hold]
Carbon comppund with oxygen containing functional group
2
votes
1answer
40 views
How does aniline react with HNO3 in the absence of sulfuric acid?
How does aniline react with $\ce{HNO3}$ in the absence of sulfuric acid? I read that nitration occurs at slow rate, but it didn't explain how nitronium ion is formed.
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0answers
22 views
What is the product of reaction 1,1'-bi(cyclopent-1-en-1-yl) with O3? [on hold]
What is the product of reaction 1,1'-bi(cyclopent-1-en-1-yl) with $\ce{O3}$? And my second question what is the product of reaction 1,1'-bi(cyclopent-1-en-1-yl) with NBS? I'm quite confused since it's ...
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votes
2answers
48 views
Production of CTAB [on hold]
I'm looking for the method/recipe/procedure for producing cetyltrimethylammonium bromide (CTAB). I didn't see it in Ullmann's, and I can't seem to find it online. Does anyone have a reference?
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0answers
12 views
cluster protein [on hold]
I have a problem with milk when we are making yogurt in a factory. When the milk pass through the machine closed the filter of the machine because the cluster that formed on the filter. My question ...
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0answers
21 views
Why is CH3 taken as +R in mesomeric effect [on hold]
$\ce{CH3}$ shows +I and +R effect. Why and how can it donate a lone pair?
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1answer
49 views
IUPAC Name for the following? [on hold]
Need help with the IUPAC name for the following line structure.
3
votes
1answer
44 views
Will PAEK polymers hydrolyze in concentrated sulfuric acid?
One of my duties at the company where I work is to perform intrinsic viscosity (IV) experiments on PAEK (poly(arly ether ketone)) polymers. These polymers don't dissolve well in most solvents, so the ...
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votes
0answers
18 views
Molarity and Concentration [on hold]
What is the molarity of the solution
produced when 85.6 g of hydrochloric acid
(HCl) is dissolved in enough water to
prepare 385 mL of solution?
In the question above do i need to find concentration ...
1
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0answers
44 views
Why add NaBH4 slowly to 4-t-butylcyclohexanone in ether solution? [Lab Procedure]
$\ce{NaBH4}$ is to be added slowly to 4-t-butylcyclcohexanone in ether solution according to laboratory procedures, but I am curious as to why that is? 4-t-butylcyclohexanone undergoes reduction with $...
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0answers
19 views
In two similar systems, the more conjugated system has lower HOMO LUMO gap? [on hold]
If there are two similar molecules, they have the same structure except for one different functional group, does the more conjugated molecule(more overlapping of orbitals) have lower energy gap ...
-1
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0answers
36 views
Where will a halogen form a bond? [closed]
I'm sorry if there is a similar question to this one, but I didn't find it. I am just interested in chemistry in general but the things that interested are normally not taught in school. So I'm going ...
3
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0answers
32 views
Mechanism of photochemical hydroamination with LDA
I've recently come across a couple examples of intramolecular alkene hydroamination accomplished by treatment with LDA followed by visible light irradiation (tungsten light bulb):[1,2]
I'd assume ...
5
votes
1answer
58 views
How is laughing gas produced in the Nef reaction?
I can't think of a mechanism for this reaction to give laughing gas.
Attempt:
I used the base to take out the acidic hydrogen at alpha position with respect to nitro group, but that makes the ...
2
votes
0answers
25 views
Why is bis(1,2,2,6,6-Pentamethyl-4-Piperidinyl) Sebacate used as a “bottom coat” for a superhydrophobic coating?
According to this MSDS sheet, a compound named bis(1,2,2,6,6-Pentamethyl-4-Piperidinyl) Sebacate is used in the "bottom coat" layer before a "top coat" of superhydrophobic NeverWet coating is applied.
...
1
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1answer
17 views
Polycarbonate resistance to acids
If polycarbonate plastic is a polar material with ester bond linkages which usually hydrolyze in acids, why is it resistant to both weak and strong acids (as polar substances)?
1
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0answers
41 views
Does CF3COOH undergo decarboxylation ? Why or why not? [closed]
Does $\ce{CF3COOH}$ undergo decarboxylation ? Why or why not?
Attempt:
I feel it should decarboxylate because $\ce{CF3-}$ carbanion must be stable due to fluorine's -I (electron withdrawing) ...
-1
votes
0answers
15 views
Representative value of interaction energy in docking simulation study [closed]
Interaction energy is calculated as a result of docking simulation in several documents. However, it seems that in the range I saw, I evaluate the minimum value, that is, the energy of the most stable ...
2
votes
2answers
76 views
Can chiral atoms have same substituents but with different orientations?
So consider this molecule. We have to determine whether nitrogen atom is chiral or not.
MY IDEAS:
Now going by all I have read, for chiral atoms only criteria is substituents to be different. Here ...
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0answers
17 views
Which type of structural identity do these molecule have (h & n) [closed]
Structural identity
To me h) is identical (in my answer sheet it is enantiomery)
to me n) is an isomery of position (in my answer sheet it is cis-trans)
ps: sorry i'm taking this course in french
...
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0answers
35 views
Geometrical isomerism in biphenyl system [closed]
Why does both even number of phenyl rings and allenes don't show geometrical isomerism. My teacher said something about that the plane of the two rings become perpendicular so changing of substitute ...
