Advertisements
Advertisements
प्रश्न
Phenol is less acidic than ______.
विकल्प
ethanol
o-nitrophenol
o-methylphenol
o-methoxyphenol
Advertisements
उत्तर
Phenol is less acidic than o-nitrophenol.
Explanation:
In o-nitrophenol, nitro group is present at ortho position. Presence of electron-withdrawing group at ortho position increases the acidic strength. On the other hand, in o-methylphenol and in o-methoxyphenol and in o-methoxyphenol, electron releasing group \[\ce{(-CH3-OCH3)}\]
Presence of these groups at ortho or para positions of phenol decreases the acidic strength of phenols. So, phenol is less acidic than o-nitrophenol.
APPEARS IN
संबंधित प्रश्न
If ethanol dissolves in water, then which of the following would be observed:
Which of the following is correct?
Wood spirit is known as acetone:
Phenol can be distinguished from ethanol by the reactions with:
(i) \[\ce{Br2/water}\]
(ii) \[\ce{Na}\]
(iii) Neutral \[\ce{FeCl3}\]
(iv) All the above
What is denatured alcohol?
Name the enzymes and write the reactions involved in the preparation of ethanol from sucrose by fermentation.
Dipole moment of phenol is smaller than that of methanol. Why?
The carbon-oxygen bond in phenol is slightly stronger than that in methanol. Why?
Arrange water, ethanol and phenol in increasing order of acidity and give reason for your answer.
Assertion: Ethanol is a weaker acid than phenol.
Reason: Sodium ethoxide may be prepared by the reaction of ethanol with aqueous \[\ce{NaOH}\].
Which reagent can convert acetic acid into ethanol?
Tonics in general contain
Alcoholic fermentation is brought about by the action of
If the starting material is 1-methyl-1,2-epoxy cyclopentane, of absolute configuration, decide which one compound correctly represents the product of its reaction with sodium methoxide in methanol.
How methanol is obtained from methanal.
Give IUPAC names of the following compounds:
\[\begin{array}{cc}
\ce{CH3 - CH - CH - CH - CH2-OH }\\
|\phantom{......}|\phantom{......}|\phantom{.......}\\
\ce{Cl}\phantom{....}\ce{CH3}\phantom{...}\ce{CH3}\phantom{.....}
\end{array}\]
3, 3-dimethyl-1-butene was subject to following reactions:
