Advertisements
Advertisements
प्रश्न
While separating a mixture of ortho and para nitrophenols by steam distillation, name the isomer which will be steam volatile. Give reason.
Advertisements
उत्तर
The ortho and para isomers can be separated by steam distillation. o-Nitrophenol is steam volatile due to intramolecular hydrogen bonding, while p-nitrophenol is less volatile due to intermolecular hydrogen bonding, which causes the association of molecules.
APPEARS IN
संबंधित प्रश्न
Write the main product(s) in each of the following reactions:
Write the structures of A, B, C, D and E in the following reactions:
Write the equation involved in the following reaction:
Reimer-Tiemann reaction
Write the equation involved in the following reaction:
Kolbe’s reaction
Explain the following with an example.
Kolbe’s reaction.
When phenol is treated with excess bromine water, it gives:
In the reaction of phenol with CHCl3 and aqueous NaOH at 343 K, the electrophile attacking the ring is:
The electrophile involved in Reimer-Tiemann reaction of phenol with CHCl3 in presence of NaOH:
Which of the following species can act as the strongest base?
Which of the following are benzylic alcohols?
(i) \[\ce{C6H5 - CH2 - CH2OH}\]
(ii) \[\ce{C6H5 - CH2OH}\]
(iii) \[\begin{array}{cc}
\ce{C6H5 - CH - OH}\\
\phantom{}|\phantom{.}\\
\phantom{..}\ce{CH3}\phantom{}
\end{array}\]
(iv) \[\begin{array}{cc}
\ce{C6H5 - CH2 - CH - OH}\\
\phantom{.......}|\phantom{}\\
\phantom{.........}\ce{CH3}\phantom{}
\end{array}\]
Attacking species in nitration of benzene in presence of fuming HNO3 is
Write the equations for the following reaction:
Phenol is treated with chloroform in the presence of NaOH
Write the chemical equation involved in the following reactions:
Acetylation of salicylic add
How can phenol be prepared from anisole? Give reaction.
Write the name of the reaction, structure and IUPAC name of the product formed when:
Phenol reacts with CHCl3 in the presence of NaOH followed by hydrolysis.
