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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4
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2answers
274 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
20 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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0answers
14 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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0answers
9 views

Pure allyl iodide can be obtained by reaction with small amount of HI or no? [closed]

Pure allyl iodide can be obtained from the reaction with small amount of HI or no?
1
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2answers
55 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 ...
1
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0answers
28 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 ...
0
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1answer
42 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 ...
0
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1answer
46 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 ...
3
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1answer
3k views

Difference between water solubilities of phenol and cyclohexanol?

The solubility of phenol is 83 g/L, while that of cyclohexanol is 36 g/L. Both of them have a hydroxy group, and can form hydrogen bonds with water. Also, the hydrophobic part of phenol, as well as ...
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0answers
31 views

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 ...
-1
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1answer
69 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 ...
40
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1answer
82k views

Differences between phenols and alcohols

I know phenols are more acidic as compared to alcohols, but are they considered different from alcohols? Sure, you can study something as a subset, but are phenols considered a subset of alcohols, or ...
2
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2answers
7k views

Do alcohols react with alkyl halides?

I wonder if alkyl halides react with alcohols or not. I searched on Google but could only find reaction of alcohols with hydrogen halides
7
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2answers
23k views

Why is ethanol written as C2H5OH not C2H6O?

This is balanced equation of fermentation of glucose: $$\ce{C6H12O6(aq) -> 2C2H5OH(aq) + 2CO2(g)}$$ I know that the result of glucose fermentation is ethanol ($\ce{C2H6O}$). What represented in ...
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0answers
26 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 ...
8
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1answer
18k views

Comparison of rate of dehydration of primary, secondary & tertiary alcohols on cyclohexane

Rate of dehydration when given compounds are treated with conc. $\ce{H2SO4}$ is According to me the answer should be $R > Q > S > P$ but my textbook solution gives the answer as R > Q > P > ...
2
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1answer
284 views

Why is ethanol distilled off before adding water in the first step of a malonic synthesis?

I am doing a malonic synthesis shown below, and I wonder why I should distill ethanol off before adding water in the first step of the reaction (First I add absolute ethanol and solid sodium).
15
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4answers
23k views

Why is pyridine used when making tosyl esters from alcohols?

Tosyl chloride is used to make a hydroxyl group into a better leaving group. However, when the reaction of tosyl chloride and an alcohol occurs, a weak base such as pyridine should be used. Why?
0
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1answer
29 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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0answers
29 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 ...
0
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1answer
71 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 ...
-1
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2answers
299 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 ...
0
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1answer
40 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 ...
0
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0answers
18 views

How to confirm experimentally that a hemi-acetal compound has formed?

I have read that under mildly acidic or alkaline conditions alcohols can attack aldehydes/ketones to produce hemi-acetals. But the reaction is reversible, so the reactants and the hemia-cetal are in ...
0
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1answer
136 views

Why primary alcohol follows SN1 mechanism?

Example 2: Identify all the products formed in the following reaction and indicate the major product. Solution: Three products will be formed in the given reaction as shown below: In ...
4
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2answers
6k views

What is an aromatic alcohol?

The following question was given in NCERT Exemplar Problems (Class XII): According to Wikipedia: In organic chemistry, the aromatic alcohols or aryl-alcohols are a class of chemical compounds ...
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0answers
56 views

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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2answers
3k views

Test for diethylether or tertiary alcohol?

What is a simple chemical test to tell the difference between a tertiary alcohol (e.g. 2-methylpropan-2-ol) and an ether (specifically diethylether/ethoxyethane)? Neither of them can be oxidised by ...
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0answers
27 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
71 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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0answers
38 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 ...
3
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0answers
43 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 ...
6
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2answers
592 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 ...
0
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1answer
147 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 ...
3
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1answer
305 views

When does a pinacol undergo dehydration or rearrangement?

What happens when the above pinacol is treated with - (a) conc. sulphuric acid (b) dil. sulphuric acid I'm confused between pinacol rearrangement and dehydration (E1 or E2?), as both possibilities ...
0
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1answer
57 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 ...
18
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6answers
6k views

Un-denaturing industrial alcohol

I have a question regarding the denaturation of industrial ethanol with methanol to discourage its consumption. The boiling point of methanol is 64.7 °C, while the boiling point of ethanol is 78.37 °...
1
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1answer
285 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 ...
0
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1answer
53 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
65 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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0answers
44 views

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

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 (...
7
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5answers
26k views

How does the inductive effect, explain the reactivity of tertiary alcohols with halogen acids?

The reactions of primary and secondary alcohols with halogen acids ($\ce{HX}$, where $\ce{X}$=halogen) require the presence of a catalyst, $\ce{ZnCl_2}$. With tertiary alcohols, the reaction is ...
1
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1answer
204 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?
2
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1answer
58 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-...
16
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3answers
8k views

Why does hand sanitizer turn into a liquid after coming out of the bottle?

Hand sanitizer is a gel in its bottle, but when I pour it on my palm, it turns into a free flowing liquid. Why does that happen? It doesn't turn to a liquid when I pour it on my floor or my table. ...
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1answer
839 views

List of primary, secondary and tertiary alcohol [closed]

Is there a list of primary, secondary and tertiary alcohols examples anywhere?
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2answers
69k views

Reaction of alcohols with PCl5 and PCl3

The reaction of alcohols $\ce{ ROH }$ with $\ce{ PCl5 }$ and $\ce{ PCl3 }$ yields an alkyl halide $\ce{RCl}.$ With $\ce{ PCl5 }$, the reaction is quite simple leading to the formation of $\ce{ RCl }$ ...
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0answers
34 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
345 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
165 views

Why are lower alcohols less flammable than their corresponding alkanes?

How to compare the general trend in amount of combustion in lower alcohols? (upto five/six carbons) Does the branching or straight chain have any effect on combustion?