Advertisements
Advertisements
प्रश्न
Name the factors responsible for the solubility of alcohols in water.
Advertisements
उत्तर
Alcohols are soluble in water because of hydrogen bonding with water molecules.
\[\begin{array}{cc}
\phantom{}\ce{R - O - H ⋅⋅⋅ O - H ⋅⋅⋅ O - H ⋅⋅⋅ }\phantom{}\\
\phantom{.......}|\phantom{..........}|\phantom{.}\\
\phantom{.......}\ce{H}\phantom{.........}\ce{R}\phantom{.}
\end{array}\]
The solubility decreases with increase in size of alkyl or aryl group.
APPEARS IN
संबंधित प्रश्न
Write the final product(s) in each of the following reactions:
Give reasons for the following:
o-nitrophenol is more acidic than o-methoxyphenol.
Give the equation of the following reaction:
Dilute HNO3 with phenol.
Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene.
When 3-methylbutan-2-ol is treated with HBr, the following reaction takes place:
\[\begin{array}{cc}
\phantom{...................................}\ce{Br}\\
\phantom{..................................}|\\
\ce{CH3 - CH - CH - CH3 ->[HBr] CH3 - C - CH2 - CH3}\\
|\phantom{.........}|\phantom{...................................}|\phantom{...........}\\
\ce{CH3}\phantom{...}\ce{OH}\phantom{...............................}\ce{CH3}\phantom{.......}\\
\end{array}\]
Give a mechanism for this reaction.
(Hint: The secondary carbocation formed in step II rearranges to a more
stable tertiary carbocation by a hydride ion shift from 3rd carbon atom.)
During dehydration of alcohols to alkenes by heating with cone. H2SO4 the initial step is ____________.
Identify the secondary alcohols from the following set:
- \[\ce{CH3CH2CH(OH)CH3}\]
- \[\ce{(C2H5)3COH}\]
The process of converting alkyl halides into alcohols involves ______.
Mark the correct increasing order of reactivity of the following compounds with HBr/HCl.
| (a) |  |
| (b) |  |
| (c) |  |
Suggest a reagent for the following conversion.
Explain why nucleophilic substitution reactions are not very common in phenols.
Ethers can be prepared by Williamson synthesis in which an alkyl halide is reacted with sodium alkoxide. Di-tert-butyl ether can’t be prepared by this method. Explain.
Why is the C – O – H bond angle in alcohols slightly less than the tetrahedral angle whereas the C – O – C bond angle in ether is slightly greater?
What is Lucas reagent?
The correct geometry around oxygen in CH3OCH3 is
Write the mechanism of acid dehydration of ethanol to yield ethene.
Write the mechanism of acid dehydration of ethanol to yield ethene.
Write the mechanism of acid dehydration of ethanol to yield ethene.
Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene.
Write the mechanism of acid-catalysed dehydration of ethanol to yield ethene
