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प्रश्न
Explain, why are boiling points of carboxylic acids higher than corresponding alcohols
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उत्तर
The boiling points of carboxylic acids are higher than the corresponding alcohols because
- Carboxylic acids have a high boiling point because of their ability to form intermolecular hydrogen bonds.
- Hydrogen bonds formed in carboxylic acids are stronger than those in alcohols.
- The –OH bond in –COOH is more strongly polarised than the –OH bond of alcohols. This is because of the presence of an electron-withdrawing carboxyl group in an adjacent position in carboxylic acids.
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संबंधित प्रश्न
Identify the strongest acid amongst the followings:
- Chloroacetic acid
- Acetic acid
- Trichloroacetic acid
- Dichloroaceticacid
Account for the following:
pKa value of 4-nitrobenzoic acid is lower than that of benzoic acid.
Why are alkyl halides insoluble in water?
\[\ce{Acetic acid ->[i. LiAIH4][ii. H3O^+] X}\]
Identify X.
\[\ce{Acetone + Methyl magnesium iodide ->[i. Dry ether][ii. HOH/H^+] P}\]
'P' in above reaction is:
Choose the INCORRECT statement.
Which one of the following acids does not exhibit optical isomerism?
\[\ce{CH3CH2COOH ->[Cl2][red P] A ->[alc. KOH] B}\]. What is B?
An aromatic carboxylic acid [A], which readily sublimes on heating, produces compound [B] on treatment with PCl5, Compound [B], when reduced in the presence of Pd catalyst over BaSO4 poisoned by sulphur in xylene solution, gives compound [C]. When compound [C] is condensed in the presence of alcoholic KCN, it gives compound [D] (Molecular formula of compound [D] is C14H12O2)
Identify the compounds [A], [B], [C] and [D].
Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their:
Which among the following compound has highest boiling point?
Weight (g) of two moles of the organic compound, which is obtained by heating sodium ethanoate with sodium hydroxide in presence of calcium oxide is__________.
