Advertisements
Advertisements
प्रश्न
Arrange the following compounds in increasing order of acidity and give a suitable explanation.
Phenol, o-nitrophenol, o-cresol
Advertisements
उत्तर
Increasing order of acidity.
o-cresol < Phenol < o-nitrophenol
In cresol, 
, the electron-donating group \[\ce{(-CH3)}\] gives electrons and intensify the charge on phenoxide ion and therefore makes it unstable. Therefore, o-cresol is less acidic than phenol. In o-nitrophenol, the electron-withdrawing \[\ce{(-NO2)}\] group withdraws electrons and disperses the - ve charge and stabilizes the phenoxide ion. Therefore, o-nitrophenol is more acidic than phenol.
APPEARS IN
संबंधित प्रश्न
Write resonance structures of aniline. What is the action of benzene diazonium chloride on ethanol?
Write the mechanism of the following reaction :
\[\ce{C2H5OH->[H2SO4][443K]CH2=CH2 + H2O}\]
Give simple chemical test to distinguish between Ethanol and Phenol.
If ethanol dissolves in water, then which of the following would be observed:
Wood spirit is known as acetone:
Phenol is less acidic than ______.
Write the IUPAC name of the following compound.
\[\begin{array}{cc}
\phantom{.}\ce{CH3 - CH - CH - CH - CH - CH3}\phantom{}\\
\phantom{......}|\phantom{......}|\phantom{......}|\phantom{.....}|\phantom{........}\\
\phantom{...}\ce{CH3}\phantom{...}\ce{OH}\phantom{...}\ce{C2H5}\phantom{.}\ce{OH}\phantom{...}\end{array}\]
Suggest a reagent for conversion of ethanol to ethanoic acid.
Arrange water, ethanol and phenol in increasing order of acidity and give reason for your answer.
Match the items of column I with items of column II.
| Column I | Column II | |
| (i) | Antifreeze used in car engine | (a) Neutral ferric chloride |
| (ii) | Solvent used in perfumes | (b) Glycerol |
| (iii) | Starting material for picric acid | (c) Methanol |
| (iv) | Wood spirit | (d) Phenol |
| (v) | Reagent used for detection of phenolic group | (e) Ethleneglycol |
| (vi) | By product of soap industry used in cosmetics | (f) Ethanol |
Assertion: Ethanol is a weaker acid than phenol.
Reason: Sodium ethoxide may be prepared by the reaction of ethanol with aqueous \[\ce{NaOH}\].
Convert the following:
Propanenitrile to ethanol.
Which reagent can convert acetic acid into ethanol?
Which of the following is known as wood spirit?
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:
