Questions tagged [alcohols]

For questions about saturated and unsaturated alcohols, their physical properties, their reactions, etc. For questions about phenol, use the [phenols] tag instead.

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51 views

Cause of m/z = 56 peak in 4-methyl-1-pentanol

This is the mass spectrum for 4-methylpentan-1-ol: From its structural formula, what could be the fragmentation which results in a peak at $m/z = 56?$ I was considering a few possibilities; could it ...
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1answer
58 views

What is the true caloric impact of Alcohol?

I've only had 1 year of basic Chemistry at school, so I am waay too uneducated to answer this question myself: What is the true caloric impact of ingested alcohol (ethanol) in the human body? Here ...
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1answer
63 views

Disinfectant production [closed]

One of my friends says that he made a disinfectant. These are the materials: 83% methanol isopropyl alcohol propylene glycol and the others are: citral, geraniol, linalool, dlimonene, l alpha ...
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1answer
105 views

Which mechanism should a reaction between the cyclopentylmethanol and the HBr should follow?

I just thought that the reaction should follow $\mathrm{S_{N}2}$ mechanism this is because the alkyl halide is primary but the book says that the reaction will follow $\mathrm{S_{N}1}$ mechanism ...
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155 views

Solubility of alcohols in non-polar solvents

The solubility of an alcohol in a non-polar solvent (like hexane) increases with size of the alcohol, as the non-polar chain increases. However, as the chain keeps increasing, will the solubility ...
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30 views

Concentrating mixtures of volatile compounds

My interest is primarily food-related here but I think this is a fairly general chemistry question. Let's say I took some liquid like lemon juice and ran it though a rotary evaporator to get just the ...
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2answers
496 views

How (in)flammable is “isopropyl alcohol” really? [closed]

I have an electric device which frequently gets very oily (it's a vaporizer for herbs). It came with a few individually packaged small "tissues" drenched in "isopropyl alcohol". I've used up them all ...
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2answers
300 views

False positive in lucas test for primary alcohol due to formation of tertiary carbocation by rearrangement?

From Wikipedia: The Lucas test in alcohols is a test to differentiate between primary, secondary, and tertiary alcohols. It is based on the differences in reactivity of the three classes of alcohols ...
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Is dialkyldimethylammonium chloride suitable for sterilization in mycology? [closed]

In hobby-mycology 70% rubbing alcohol is commonly used for sterilizing work surfaces, bags, syringes, still air boxes, basically everything. Alcohol however, seems to have some downsides, when it ...
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1answer
37 views

Measure ethanol volume fraction in a beverage [closed]

Given a sample of an alcoholic beverage (be it beer, wine, etc..), what are possible methods to find out the ABV (alcohol by volume) of it with moderate accuracy? As fas as I know, some methods exist ...
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Transposition in vicinal diols dehydration

In this reaction, I don't know how I could place a methyl in the benzyl carbon. My first idea was to treat the compound with OsO4/H2O2 to form the vicinal diol, and then dehydrate in acidic medium and ...
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1answer
184 views

Which has a greater dipole moment: methylamine or methanol? [closed]

Which has a greater dipole moment: methylamine $(\ce{CH3NH2})$ or methanol $(\ce{CH3OH})?$
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545 views

Mass Spectra: 1-pentanol vs 3-pentanol

In mass spectrometry, 1-pentanol can be observed to have no peak at $m/z = 59$, whilst 3-pentanol can be observed to have a peak at $m/z = 59$. Clearly the 3-pentanol peak at $m/z = 59$ is due to the ...
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1answer
124 views

Mechanism of the reaction of cyclohexanol and concentrated nitric acid to form adipic acid [closed]

If someone could please give me the hint to how the initial attack is carried out, it'd be a huge help.
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1answer
324 views

Is Pinacol rearrangement the source for the ring expansion?

I have no idea what's happening as in the product (the answer is (a)) there is a new ring being formed on the left benzene. But as I studied after $\ce{H2O}$ leaves, a carbocation is then formed on ...
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1answer
78 views

Reduction of an Allylic Enoate to afford allylic alcohol in presence of Benzyl Acetal Groups

I have a question that requires finding a reagent for the reduction of an enoate to the corresponding allylic alcohol. Preferably done in one step too with an acid workup at the end too. What types ...
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2answers
1k views

Taking volume contraction into account when mixing water with ethanol

To calculate the amount of purified water and the amount of ethanol (96% Vol.) which is needed for a desired/variable amount of a mixture - given a desired/variable percentage of ethanol - I use the ...
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0answers
26 views

Does myristyl glucoside contain alcohol? [closed]

I read that "myristyl glucoside is a product obtained by the condensation of myristyl alcohol with aglucose polymer." Does that mean that alcohol is part of the final product/myristyl glucoside itself?...
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75 views

What exactly is an 'activated' alcohol? Benzylic vs. Allylic vs. Aliphatic

I'm currently writing a report about the oxidations of various alcohols using different catalytic systems. In all papers it is stated that benzylic and allylic alcohols are "activated", while ...
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60 views

Rate determining step in oxidation of alcohols using chromium-related compounds

I wanted to ask a question about the kinetics of an oxidation reaction using chromium reagents. I was given a lecture today on the mechanism of alcohol oxidations using Chromate (VI) reagents: My ...
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1answer
227 views

What does ethylene glycol decompose to when exposed to air for an extended period of time?

I came across this article on wikipedia on ethylene glycol stating that it decomposes fairly quickly. I was under the impression that ethylene glycol was dangerous to let leach into soil, but I think ...
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1answer
313 views

What should be the name of the given compound?

Following compound is named as (1) 6-Mercaptocyclohex-4-ene-1,3-diol (2) 1-Mercaptocyclohex-2-ene-4,6-diol (3) 1-Mercaptocyclohex-5-ene-2,4-diol (4) 4-Mercaptocyclohex-2-ene-1,5-diol As per my ...
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Is the reaction of anhydrous aluminium(III) chloride and anhydrous ethanol reversible?

I'm planning an experiment that I'll do in silico in the near future, and one of the steps involves the extraction of the $\ce{AlCl3 · C2H5OH}$ adduct without any water in it. Can the ethanol be ...
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1answer
229 views

Do secondary alcohols react faster than primary alcohols or is it the other around? [closed]

My questions is that do secondary alcohols react faster than primary alcohols or is it the other around? This for the oxidation of the alcohol to a ketone or an aldehyde. This reaction is with KMnO4 ...
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2answers
259 views

Alkene reaction with acid via SN1 reaction

I want to ask a question about alkenes and their reactivity with acids. From high school studies, I recall that if you had an acid $\ce{H3O+}$ i.e. $H^+$ that it would react with an alkene as shown ...
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128 views

Nucleophilic Substitution Reaction of Alcohol

What is the final product? According to me, it's option (3). But given answer in the booklet is (2). Given primary alcohol undergoes SN2 reaction to produce isopentyl bromide and the latter again ...
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1answer
37 views

Ingredients for cleaning optical elements

I have recently purchased a cleaning solution for precision optics which has the following ingredients (amounts were not specified): Ethyl Alcohol Methylethylketon Aqua Diethyl Ether Isopropyl ...
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540 views

When alcohol is used to sterilize, what about it changes that it can't be re-used? [closed]

I read online that when you use regular household rubbing alcohol to soak something for sterilization purposes, you're then supposed to toss it out. I'm just curious why. Like, as long as there's a ...
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1answer
205 views

Which reaction occurs first when 5-hexen-1-ol reacts with sulfuric acid?

I am trying to solve this question: Find the major product of the following reaction: Now we could either do electrophilic addition on the alkene or do dehydration of alcohol. These two different ...
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2answers
2k views

Why doesn't ethanol dissolve in sodium bicarbonate?

Today I experimented with different solvents and solutes and was a bit surprised by one result. When I added ethanol to dilute sodium bicarbonate and tapped the test tube against my palm to mix it, I ...
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1answer
315 views

What is an example of an isopropyl alcohol resistant caulk?

What is a caulk (or bonding adhesive) that can be exposed permanently submerged in an isopropyl alcohol (>91%) bath? The idea came from this previous question: Silicone vs Alcohol It seems from one ...
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1answer
343 views

Is propanol 1-2 diol 178 the same as propylene glycol?

I clean vinyl records in an ultrasonic vinyl record cleaning machine the manual states it uses propanol 1-2 diol 178 as a surfactant. I think this is the same chemical as propylene glycol. Is it?
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Alcohol Nonmeclature - Organic Chemistry

I'm new to organic chemistry and having some trouble naming alcohols. I came across this molecule, I believe it's name is 3-ethyl 2-pentanol, but my online checker system is saying that I am wrong. Am ...
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42 views

Diketone intramolecular reaction question

I realize that one of the methyl groups on either carbonyl compound will become deprotonated and then it will attack the other carbonyl to form a pentane ring. However, with the methyl group in the ...
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1answer
422 views

Role of hcl gas in organic reactions [closed]

I encountered many questions in the competitive exam field of high school organic chemistry where we add some compounds and treat it in excess alcohol solutions in the presence of dry hcl gas, it is ...
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49 views

Hemiacetal formation mechanism

The question is asking which reagents can be used to carry out this reaction. I get the L (PCC) is used to turn the primary alcohol into an aldehyde. However, I believe that is not the only reagent ...
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91 views

Ethyl acetate produces red colour on ceric ammonium nitrate test

When I did CAN test on ethyl acetate red colour was seen. I thought water may get added with Ethyl acetate to produce this compound which in turn gave red coloration but carbon should not make three ...
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2answers
968 views

Why is the Lucas test not recommended to differentiate higher alcohols?

I read about the Lucas test for alcohols in which a cloudy precipitate is produced with a tertiary or secondary alcohol. However, on a side note it was mentioned that this test is useful only for ...
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1answer
262 views

Doubts Regarding Ceric Ammonium Nitrate Test for Alcohols

I read about Ceric Ammonium Nitrate Test for Alcohols and a red colour is produced if the solution has an alcohol functional group however as a side note it was mentioned that this test is only useful ...
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1answer
192 views

Neutralize the smell of alcohol in liquid chalk

i'm trying to mix my own liquid chalk, which is a simple mixture of chalk and a high percentage alcohol in a ~2 part chalk 1 part alcohol relation. Unfortunately the smell is rather intensive and I ...
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1answer
61 views

Is there an easy way to detect methanol in spirits (which may have been adulterated)?

Is there an easy way to detect methanol in spirits, which, you suspect, may have been adulterated?
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1answer
184 views

Synthesis of phenethyl alcohol from benzene

How can I make phenethyl alcohol $(\ce{C6H5CH2CH2OH})$ from benzene? I have got information that phenethyl alcohol is made from benzene by Friedel-Crafts reaction between benzene and ethylene oxide ...
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1answer
121 views

Does 2,2-dimethylpropan-1-ol give a positive Lucas test? [duplicate]

I learnt that the Lucas test involves the formation of a carbocation and it gives a positive test based on the stability of the carbocation formed, and hence primary alcohols do not show turbidity (...
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1answer
248 views

Does benzene react with steam to create an alcohol?

Benzene has a molecular formula of $\ce{C6H6},$ right? Surely it has some alkene-like properties because of the double bonds, so can it undergo a hydration reaction to create alcohol?
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1answer
159 views

Reaction between 1-methylcyclopentanol and potassium permanganate

In my basic organic chemistry class, I learned that only primary and secondary alcohols undergo oxidation (using $\ce{KMnO4}$). However, what is the outcome of reacting tertiary alcohol (1-...
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1answer
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List of primary, secondary and tertiary alcohol [closed]

Is there a list of primary, secondary and tertiary alcohols examples anywhere?
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1answer
653 views

Enthalpy of combustion of 1-butanol

1-butanol $\ce{C4H10O}$ So I have absolutely no idea how to find the enthalpy and I did some looking on the internet with no use since I don't understand. I came here hoping someone generous could ...
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43 views

Comparing the emission spectrum of ethanol and mixture of alcohols

Sorry if this question has a simple answer, but I've been unable to find it elsewhere. Using a diffraction grating, burning ethanol (99.9%) will produce a rainbow of colours. However, when burning ...
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1answer
2k views

what is mechanism for reaction phenol + dimethylsulphate -> anisole

Dimethyl sulphate breaks the oh bond and forms anisole. How does the reaction proceed?? is it oxygen lone pair attacks on sulphur which has partial positive charge?? the reaction takes place in ...
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1answer
77 views

Which functional group gets reduced first?

The following is a reduction reaction. In the reduction of 2 to 3, keto group undergoes reduction by nucleophillic addition. Ester could undergo nucleophillic acyl substitution to give an aldo group, ...

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