Question

50 points who answers all


1. Give a reaction to show the acidic nature of alcohols.
12. Arrange the following in the increasing order of ácid strength:
CHICHOH. CH3CHomC73, (CH3)3C-OH.
3. (@) Alkoxide ion is stronger base than hydroxide ion, why?
(b) Phenoxide ion is more stable then alkoxide ion. Give reason
14. What is the effect of EWG on acid strength of phenol?
5. Give reasons: Phenol is a stronger acid than an alcohol.
16. Cresols are less acidic than phenol. Why?
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051:01 / 51:40​

Answer 1

Answer:

(1) Phenoxide ion is more stabilized than −CH

3

O ion through resonance. Thus, phenol is more acidic than methanol.

(2) Due to extensive intermolecular H-bonding the −C−O−H bond angle in alcohol slightly less than tetrahedral angle. H-bond thrust the angle slightly.

(3) Since, (CH)

3

C

+

is more stabilized through +I effect of three methyl group thus (CH

3

)

3

C−I and CH

3

OH formed on treatment of HI with −(CH

3

)

3

−CO−CH

3

.

MeC−O−Me→Me

3

C

+

+MeO

−

+HI→Me

3

C−I+MeOH

Answer 2

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due to extensive intermolecular bonding

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