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प्रश्न
Answer in brief.
Give the reagents and conditions necessary to prepare phenol from Benzene sulfonic acid.
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उत्तर
Reagents and conditions required to prepare phenol from:
Benzene sulfonic acid
Reagents: NaOH, Solid NaOH, dil HCl
Conditions: Temperature 573 K
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संबंधित प्रश्न
Answer in brief.
Explain why p-nitrophenol is a stronger acid than phenol.
Arrange the following in decreasing order of acid strength.
CH3OH, CH3–CH2–OH, CH3–CH(OH)–CH3, (CH3)3–C–OH
Write the reaction involved in the preparation of phenol from benzene sulphonic acid.
What is the action of following on phenol at low temperature?
- dil. HNO3
- conc. H2SO4
- Br2/CS2
An unknown alcohol is treated with Lucas reagent. Explain how you will determine whether the alcohol is primary, secondary or tertiary. Indicate by chemical equation the reaction between isopropyl alcohol and Lucas reagent.
How will you bring about the following conversions?
isopropyl alcohol to acetone
Write the reactions for the preparation of carbolic acid from aniline.
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.
Phenol reacts with concentrated nitric acid in the presence of cone. H2SO4 to form ____________.
In phenols, −OH group is attached to ___________ hybridised carbon.
The CORRECT decreasing order of boiling points for isomeric primary (1°), secondary (2°) and tertiary (3°) alcohols is ____________.
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 ____________.
Identify reagents X, Y and Z.
Which among the following compounds is used to prepare solid fuel using calcium acetate?
The number of σ bonds in carbolic acid is ______.
Identify the compound having highest boiling point from the following?
Name the catalyst used in commercial method of preparation of phenol.
Identify the compound amongst the following of which 0.1 M aqueous solution has highest boiling point.
What is the product formed when aniline is treated with \[\ce{NaNO2 + HCl}\] previous to hydrolysis?
The product C in the following reaction is
The major product obtained in the following reaction is
Write chemical reaction when hot copper is treated with Vapours of 3° (tertiary) alcohol.
Explain: Phenols are acid while alcohol is neutral.
Which of the following is primary benzylic alcohol?
