Short Answer TypeWhy is benzaldehyde is less reactive than acetaldehyde towards nucleophilic addition reactions?
Account for the following:
(i) Formaldehyde gives Cannizzaro’s reaction whereas acetaldehyde does not.
(ii) Carboxylic acids do not give characteristic reactions of carbonyl compounds.
Account for the following:
(i) Chloroacetic acid has higher pKa value than acetic acid.
(ii) Electrophilic substitution in benzoic acid takes place at meta position.
(iii) Carboxylic acids have higher boiling points than alcohols of comparable molecular masses.
Long Answer TypeHow would you obtain the following named sources:
(i) Tertiary butyl alcohol from acetone? (ii) Acetone from acetic acid?
Mention conditions for reactions involved.
Short Answer TypeExplain why O-hydroxy benzaldehyde is a liquid at room temperature while p- hydroxy benzaldehyde is a high melting solid.
Due to intramolecular H-bonding in O-hydroxy benzaldehyde exists as discrete molecule whereas due to intermolecular H-bonding p-hydroxy benzaldehyde exist as associated molecules. To break this intermolecular H-bonds a large amount of energy is needed. Consequently P-isomer has a much higher m.p. and b.p. than that of O-isomer. As a result O-hydroxy benzaldehyde is liquid.
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