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प्रश्न
Write the reaction to get aspirin from salicylic acid.
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उत्तर
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संबंधित प्रश्न
Answer in one sentence/ word.
Write the IUPAC name of alcohol having molecular formula C4H10O which is resistant towards oxidation.
Answer in brief.
Explain why phenol is more acidic than ethyl alcohol.
An ether (A), C5H12O, when heated with excess of hot HI produce two alkyl halides which on hydrolysis form compound (B) and (C), oxidation of (B) gave and acid (D), whereas oxidation of (C) gave a ketone (E). Deduce the structural formula of (A), (B), (C), (D), and (E).
Oxidation of ethyl alcohol using K2Cr2O7/dil H2SO4 leads to formation of _______________
Arrange the following in decreasing order of acid strength.
CH3OH, CH3–CH2–OH, CH3–CH(OH)–CH3, (CH3)3–C–OH
What is the action of following reagents on pent-3-enal?
- H2/Ni
- LiAlH4/H3O+
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.
Write the reactions for the preparation of carbolic acid from aniline.
What is the action of conc. H2SO4 on carbolic acid at 373 K.
Phenol reacts with concentrated nitric acid in the presence of cone. H2SO4 to form ____________.
In the Lucas test for alcohols, the appearance of turbidity is due to the formation of ____________.
____________ is used for silvering mirrors.
α-butylene when subjected to hydroboration oxidation reaction, yields ______.
The CORRECT decreasing order of boiling points for isomeric primary (1°), secondary (2°) and tertiary (3°) alcohols is ____________.
The secondary alcohol is ____________.
In Raschig's method for synthesis of phenol, the reactants used are ____________.
\[\ce{Isopropyl alcohol + acidic K2Cr2O7 -> X}\]
Identify product 'X' in the above reactions.
Identify the product B in following conversion.
\[\ce{Chlorobenzene + H2O ->[Cu, 673 K][Pressure] A ->[conc. H2SO4][373 K] B}\]
Which of the following conversion explains the acidic nature of alcohols?
Which following reagent is used to obtain alkene from alcohol?
Which among the following is allylic secondary alcohol?
Identify 'Z' in the following series of reaction:
\[\ce{Butan - 2 - ol ->[PCl3] X ->[alco. KOH] Y ->[i) H2SO4][ii) H-OH/heat] Z}\]
Identify the alcohol that reacts immediately with Lucas reagent?
A reaction of phenol with chloroform in presence of sodium hydroxide to form salicylaldehyde is known as ____________.
Which of the following alcohols is NOT prepared by reduction of carbonyl compounds?
Identify the product obtained when phenol is treated with bromine water?
Explain: Phenols are acid while alcohol is neutral.
What is the commercial method of preparation of phenol?
Arrange the following compounds in order of decreasing acidity:
