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Aldehyde ketone and Carboxylic acids notes

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  • October 23, 2024
  • 2
  • 2024/2025
  • Class notes
  • Mr kushal tiwari
  • All classes
  • Secondary school
  • 5
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SCHOLAR CLASSES

CHEMISTRY

ALDEHYDE KETONES CARBOXYLIC ACID

BY- Bharat Sir

1. Would you expect benzaldehyde to be more reactive or less reactive in
Nucleophilic addition reaction than propanol. Explain.
2. Which acid is stronger and why?
F3C-C6H4COOH and CH3C6H4COOH
3. Explain why O-hydroxy benzaldehyde is a liquid at room temperature while
p-Hydroxy benzaldehyde is a high melting solid.
4. Why is the boiling point of an acid anhydride higher than the acid from
which it is Derived?
5. Why do Carboxylic acids not give the characteristic reactions of a carbonyl
group?
6. Cyclohexanone forms cyanohydrin in good yield but 2,2,6 trimethyle cyclo-
hexanone does not. Why?
7. Treatment of Benzaldehyde with HCN gives a mixture of two isomers which
cannot Be separated even by careful fractional distillation. Explain why?
8. Sodium Bisulphite is used for the purification of aldehydes and Ketones.
Explain.
9. Why pH of reaction should be carefully controlled while preparing ammonia
Derivatives of carbonyl compound?
10. Why formic acid is stronger acid than acetic acid?
11. Why is oxidation of alcohols to get aldehydes carried out under controlled
Conditions?
12. Why the oxidation of toluene to benzaldehyde with CrO3
Is carried out in the Presence of acetic anhydride.
13. Melting point of an acid with even no. of carbon atoms is higher than those
of its Neighbour with odd no. of carbon atoms.
14. Most aromatic acids are solids while acetic acid and others of this series are
liquids. Explain why?

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