Organic chemistry is a branch of chemistry that deals with organic molecules. Organic molecules generally have C-H or C-C bonds.

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removeable polymer coating

i need an removable polymer coating material should have following properties:- Fast drying time (without any hardener) Elasticity Spray-able Transparent Polyurethane Thinner-base Peel-able ...
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What type of reagent can convert nitrobenzene to N-phenylhydroxylamine? [on hold]

We are required to convert nitrobenzene to N-phenylhydroxylamine. Under what conditions and/or reagents can it be achieved? Please justify also the same.
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33 views

Can we do combustion caused by limited supply of air in a lab? How?

For example Ethyne in combustion by limited supply of air $$ \ce{ 2C2H2 + 3O2 ->[\Delta] 2CO2 + 2H2O + 2C } $$ vs. $$ \ce{ 2C2H2 + 5O2 -> 4CO2 + 2H2O + Energy } $$ What are the ...
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Saytzev and Hofmann elimination in E1

From what I have read, E1 largely produces the more substituted alkene because of the fact that more substituted alkenes are more stable as a result of hyperconjugation. However, in E2 the situation ...
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How to find the alcohol content of a probiotic liquid?

Probiotics are microorganisms that are believed to provide health benefits when consumed. Water Kefir is one such probiotic drink. This has blend of bacteria, yeast (BY), sugar water and the result of ...
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27 views

Synthesis of 2-Phenyl-2-Butanol from Grignard Reagent

The question is this: 2-Phenyl-2-Butanol can be synthesized by three different combinations of a grignard reagent and a ketone. Show each combination. I can only think of one. Butanone with ...
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65 views

Why must the leaving group in E1cb be poor?

Typically the leaving group for E1cb is poor (like -OH or -OR) but why must this be the case? The substrate appears in the rate equation so surely a good leaving group would be beneficial?
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What makes E1 more favourable than SN1?

Each goes through a carbocation intermediate which is enormously reactive so what would promote attack towards a proton (E1) rather than towards the carbocation for substitution. Besides an increase ...
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509 views

CO poisoning - What I've been taught is a hoax?

In elementary school, I happened to ask my teacher: What is $\ce{CO}$ they talk about these days? I was then taught that Carbon monoxide "competes" with the oxygen in our blood (we were taught ...
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107 views

Making three membered ring using different reactants

I am struggling with the above question. It will be the conjugate base of trichloromethane that is involved. The same is true of the carboxylate. However, I have no idea about the reaction ...
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Chemical reaction of norbornyl derivative [on hold]

I want the mechanism of this reaction. How the formation of carbocation takes place?
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Rate of Acetolysis [on hold]

The rates of acetolysis for the following norbornyl derivatives are in the order
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Do chemicals undergo granular convection?

Do chemicals of an average weight, such as Polyethylene Glycols, undergo granular convection (the Brazil nut effect)?
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Could I get a hint on the structure of this molecule based on HNMR spectra?

Chemical formula is $\ce{C7H6O3}$. IR spectra has a peak at 3238, which I believe could be an alcohol, phenol, or carboxylic acid. There's an additional peak at 3015, which I believe is either an ...
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Non memorizable method for predicting products of organic chemical reactions [closed]

Is there any non-memorizable method for predicting products of organic chemical reactions? Thanks in advance
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1answer
57 views

Dissociation of different compounds?

What would be the dissociation of Hydrosulfuric acid in the presence of water? I was thinking that Hydrosulfuric acid or $\ce{H2S}_{(aq)}$ would form $\ce{2 H+}$ and Sulfur ions. With this logic, I ...
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370 views

Why are triamino compounds so rare?

I was doing a reaxys substructure search for the compound shown on the left below, with the 3 amines on 1 carbon. However, the closest I found were all trinitro compounds like on the right. I would ...
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1answer
37 views

Elimination in dibromocinnamic acid

The above is a picture of dibromocinnamic acid. In the lab today I carried out an elimination reaction on this molecule using potassium carbonate giving the carbonate anion as a base. I thought ...
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60 views

Methanol skin exposure serious or not? [closed]

I have just minutes ago been splashed with industrial grade methanol. It seemed like a small amount (1-3mL) on my skin. I already washed the affected area thoroughly with soap and water. Online I've ...
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What causes the really bad smell of rotten potatoes?

Rotten potatoes have a distinctive unpleasant odour, and I can't find any definitive answer as to what the chemical involved is. I was thinking it might be Butyric acid, from the fermentation of the ...
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67 views

Why water boils vegetables but not oil?

Am having a crazy question. It may be crazy but I wanna know the answer... When we add vegetables to hot water (boiling), it boils the vegetables... But when we add vegetables to hot oil(boiling) it ...
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alpha-hydrogen atom and keto-enol tautomerism

The following is an extract from my book- For an aldehyde or a ketone to exhibit keto-enol tautomerism, it is essential that it must have atleast one $\alpha$-hydrogen atom. Thus, acetophenone, ...
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1answer
42 views

Why does one bicyclic diastereomer react faster than the other one?

I have a difficult question in my problem sheet that I cannot solve. I have been asked to explain the following observation: I have a number of issues with this: 1) The fast reaction must be a ...
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36 views

What is the difference between IPA and Ethanol in terms of solubility?

I have read an article online that says that ethanol could be used in a solvent extraction of two solids, but it also says that isopropyl alcohol could also be used, but must be used in higher ...
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1answer
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Why can syn-periplanar E2 elimination happen in molecules like vinyl bromides but seemingly not in other molecules?

E2 eliminations occur when the leaving group and the proton are in the anti-periplanar conformation not syn-periplanar. This is beyond a merely a preference as leads to E2 reactions being ...
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55 views

Dependence of steric hinderance on enol content

The following is extract from my book- To illustrate this, let us consider the enol contents of acetyacetone and $\alpha$ - methylacetylacetone. Although both the enols are stabilized by H bonding ...
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1answer
35 views

Electron Pair Geometry in Ibuprofen (Electron Pair Geometry in Organic Compounds)

I am trying to determine the electron pair geometry (and molecular geometry) of some atoms in ibuprofen. The first one I am trying to do is the double bonded oxygen. Ibuprofen is pictured below: I ...
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Why can't bicyclic structures undergo E2 elimination?

Bicyclic structures like norbornane don't undergo E2 eliminations, but why is this the case? I understand that it can't do E1 as it can't form a stable carbocation (the bridgehead carbons that is) but ...
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Hybridization - Mixing one atomic s orbital with 2p orbitals

Explain why three ${sp^2}$ hybrid orbitals result when one s atomic orbital is blended with two p atomic orbitals.
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103 views

Step up reaction - increase carbon chain length

What would be the best reaction to increase the carbon chain length in an alkane? Preferably, it would be by one at a time, however, if that is not possible, just to generally increase the total ...
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1answer
30 views

How can the chlorophyll concentration of plants be measured?

Is there a way to measure the chlorophyll content of plants (from e.g. leaves) with basic chemistry equipment (at home)?
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26 views

Why don't we use an alkyl halide directly in Gabriel Phthalimide Synthesis?

In Gabriel Phthalimide Synthesis, why do we use $\ce{KOH}$ in first step rather than directly adding an alkyl halide?
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578 views

Is it still possible for an amateur, a hobbyist, or a science buff to make relevant discoveries in chemistry today? [closed]

Consider astronomy. Hobbyists and amateurs are today still able to make small to moderate scientific contributions to their field. Is the same true in chemistry? I think there might be at least two ...
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81 views

Why does heptane have an odour

I read that alkanes are 'colourless and odourless'. Heptane is an alkane. Why does heptane smell like heptane? Impurities?
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Organic chemistry - alkanes step up reaction

Well I was studying organic chemistry, and I came across this reaction for increasing the length of the carbon chain. Upon asking my teacher about the following reaction, she said she was unsure about ...
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39 views

How to determine number of alpha hydrogens in a cyclic compound?

How do we determine the number of alpha hydrogens in a compound? Where should we start the naming from? For example, In both these structures, I need to determine their stabilities based on their ...
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Soil organic carbon digestion methods - safety

I have several ground up soil samples that I need to get fractions from. The fractions are based on the Century Soil Model. Briefly, the fractions relate to the approximate time frame it takes for an ...
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1answer
40 views

Is table salt sticking to my laptop?

I was reviewing first posts here, and eating a juicy and salty (table salt) tomato at the same time. Suddenly, I realized that a few table salt crystals have been poured down on my mousepad. I got ...
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Woodward Hoffmann rules for electrocyclic reactions

For the thermal electrocyclic cleavage of cyclobutene to 1,3-butadiene, what is the correct assignment of the orbital components ? My attempt: I know this reaction is allowed (4n thermal ...
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Why are PTFE and FEP named “ethylene” when they don't have double bonds? [duplicate]

PTFE (Polytetrafluoroethylene) and FEP (Fluorinated ethylene propylene) have the following chemical formulas: It's been years since I have taken organic chemistry, but I do remember alkenes have ...
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What gas arises from the reaction between 2-methyl-2-bromopropane and hydroxide (Sn1-reaction)?

I know the majority of yield will be in the form of 2-methyl-2-propanol and a Bromide anion, but what sideproduct will exist that is gaseous? Thanks!
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What does CH4 form when dissolved in aqeous solution?

So I understand $\ce{CH4}$ has a low solubility, but when it does dissolve, what does it form? E.g. $\ce{HCl_{(g)} + H2O -> H3O+_{(aq)} + Cl^{-}_{(aq)}}$. So what does $\ce{CH4 + H2O}$ form? Thank ...
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The combining of Carbon Dioxide and Hydrogen

How does this work exactly? Does it need some sort of kick in order to come together, or does it come together when put in a pressurized chamber?
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Acetylene and the Tollen's test

One of the uses of the Tollen's reagent is to confirm the presence of a terminal triple bond in a compound. Does Acetylene give a positive Tollen's test? If not, why is this so?
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What is the OH in alcohol?

What is the $\ce{OH}$ functional group in alcohol (ethanol)? My teacher told me it isn't the same as the $\ce{OH-}$ ion or hydroxide. But it does donate one electron to the respective carbon chain and ...
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1answer
56 views

Is oil shinier than water? Why?

The physics part: The part that talks about being shiny, I agree, is mainly physics. But proceed in my question, and you'll see how it's a chemistry one. We know things are shiny if they either ...
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What is the relation between different chemical compositions ratio?

If I have list of various chemical compositions, lets say 1) Composition contains A ( 5-10 wt. %), B (5-70 wt. %) and C (rest) 2) Composition contains A (10-20 parts by weight), B (0.5-3 parts by ...
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84 views

Why is the pKa (COOH) of alanine and glycine similar but the pKa (NH_3) different?

Alanine is heavier with a ($\ce{CH_3}$) than glycine which has an ($\ce{H}$). What makes them have different $pK_{a}(\ce{NH_3})(pKa: Aly=9.69 , Gly=9.60)$ but similar $pK_{a}(\ce{COOH})(pKa=2.34) $ ...
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What will eventually happen to uncovered vegetable (seed) oil exposed to the air?

If I leave some olive oil uncovered and fully exposed to indoors air for enough time (though away from UV exposure or any other environmental factors), what will happen to the oil? I read here that ...
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Why Aromatic? Why not Circular?

So I was just reviewing my chemistry notes and I came face to face with nomenclature and hydrocarbons. Then I saw aromatic hydrocarbon me like benzene and I wanted to know why it is called aromatic ...