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प्रश्न
Write the reactions for the preparation of carbolic acid from aniline.
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उत्तर
Aniline is treated with nitrous acid [NaNO2 + HCl] at low temperature to obtain benzene diazonium chloride, which on hydrolysis gives carbolic acid (phenol).
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संबंधित प्रश्न
Choose the correct option.
Which is the most resistant alcohol towards oxidation reaction among the following?
Answer in brief.
Explain why phenol is more acidic than ethyl alcohol.
Write two points of difference between the properties of phenol and ethyl alcohol.
What is the action of conc. H2SO4 on carbolic acid at 373 K.
Write chemical reactions to convert phenol into salicyaldehyde. Write the name of the reaction. What happens when if CCl4 is used instead of CHCl3 in the above reaction.
____________ is used for silvering mirrors.
Which of the following compounds is obtained, when phenol react with bromine water?
α-butylene when subjected to hydroboration oxidation reaction, yields ______.
Bromination of phenol, will NOT give:
Phenol is ____________.
Propane when treated with cold cone. H2SO4 forms a compound which on heating with water gives ______.
Which of following elements does not react with hot concentrated sulphuric acid?
The number of isomeric alcohols possible with the formula C4H10O is ____________.
In Raschig's method for synthesis of phenol, the reactants used are ____________.
The number of moles of hydrogen gas formed when 2 moles of 2-methylpropan-2-ol reacts with aluminium is ____________.
Identify the product B in following conversion.
\[\ce{Chlorobenzene + H2O ->[Cu, 673 K][Pressure] A ->[conc. H2SO4][373 K] B}\]
The number of σ bonds in carbolic acid is ______.
Identify the alcohol that reacts immediately with Lucas reagent?
Ethyl alcohol can be prepared from a Grignard reagent by the reaction of ______.
Product (B) in this reaction is:
Which of the following compounds reacts immediately with Lucas reagent?
What is the action of nitrous acid on aniline?
Arrange O - H, C - H and N - H bonds in increasing order of their bond polarity.
Arrange the following compounds in an increasing order of their solubility in water:
Explain the reaction of 1° and 2° alcohol with oxidising agent chromic anhydride (CrO3).
What is the commercial method of preparation of phenol?
Arrange the following compounds in order of decreasing acidity:
What is the name of isopropyl alcohol according to the carbinol system?
