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प्रश्न
Answer in one sentence/ word.
Write the name of the electrophile used in Kolbe’s Reaction.
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उत्तर
Carbon dioxide
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.
Answer in brief.
Give the reagents and conditions necessary to prepare phenol from Benzene sulfonic acid.
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).
When vapours of tert.butyl alcohol are passed over hot copper, it gives _____________
The reagents used to convert phenol to 2,4,6-tribromophenol is _____________
Arrange the following in decreasing order of acid strength.
CH3OH, CH3–CH2–OH, CH3–CH(OH)–CH3, (CH3)3–C–OH
Write the reaction to get aspirin from salicylic acid.
With the help of chemical equations show what happens when cumene hydroperoxide is treated with dil. acid.
Write Kolbe’s reaction.
What is the action of following on phenol at low temperature?
- dil. HNO3
- conc. H2SO4
- Br2/CS2
Which alcohol is difficult to oxidise?
Propane when treated with cold cone. H2SO4 forms a compound which on heating with water gives ______.
The product 'C' in the following reaction is:
\[\ce{CH3CH2Br ->[alc. KCN] {'A'} ->[H3O^+][\Delta] {'B'} ->[i. LiAlH4][ii. H3O^+] {'C'}}\]
In Dow process, chlorobenzene is converted into phenol by ____________.
The most resistant alcohol towards oxidation reaction is:
Identify reagents X, Y and Z.
In Raschig's method for synthesis of phenol, the reactants used are ____________.
What is INCORRECT about the product written in the below given reaction?
\[\ce{R - CH2 - OH ->[PCC] R - COOH}\]
(I)
(II) \[\ce{P + Zn ->[\Delta] Q}\]
(III) \[\ce{P ->[Na2Cr2O7][H2SO4] R}\]
Q and R are respectively:
Identify the product B in following conversion.
\[\ce{Chlorobenzene + H2O ->[Cu, 673 K][Pressure] A ->[conc. H2SO4][373 K] B}\]
Amongst the following alcohols which would react fastest with cone. HCl and ZnCl2?
What is the product formed when aniline is treated with \[\ce{NaNO2 + HCl}\] previous to hydrolysis?
The chemical test that distinguish between benzoic acid and phenol is ______.
The order of reactivity of hydrogen halides with ether is as follows.
Arrange the following compounds in an increasing order of their solubility in water:
Write the product when 1°, 2° and 3° alcohol vapours are passed over hot copper.
Propene can be converted into propan-1-ol by:
