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Which of the following substituted pheno...

Which of the following substituted phenols is the strongest acid?

A

B

C

D

Text Solution

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The correct Answer is:
D
Acidic strength of phenol is enhanced by the presence of electron- withdrawing groups which stabilized the phenoxide ion.
While presence of electron- donating group like `CH_(3),C_(2)H_(3)` destabilizes the phenoxide ion, thus decreasing the acidic strength
Due to the presence of strong electron- withdrawing group - `NO_(2)(-I, -R)`, p-nitro phenol is the strongest acid.
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PHYSICS WALLAH-ALCOHOLS, PHENOLS AND ETHERS -NEET PAST 5 YEARS QUESTIONS
  1. Reaction between acetone and methyl magnesium chloride followed by hyd...

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  2. Anisole on cleavage with HI gives:

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  3. Which of the following substituted phenols is the strongest acid?

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  4. CH(3)CH(2)CH=CH(2)underset(H(2)O.H(2)O(2).)overset(B(2)H()rarrZ What...

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  5. The compound that is most difficult to protonate is

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  6. The structure of intermediate A in the following reaction, is

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  7. Identify the major products P, Q and R in the following sequence of re...

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  8. The compound A on treatment with Na gives B, and with PCl(5) gives C. ...

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  9. In the reaction the electrophile involved is:

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  10. The heating of phenyl-methyl ethers with HI produces .

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  11. Which one is the most acidic compound?

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  12. The oxidation of phenol with chromic acid gives

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  13. Identify A and predict the type of reaction:

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  14. The reaction: can be classified as?

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  15. Reaction between acetone and methyl magnesium chloride followed by hyd...

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  16. Anisole on cleavage with HI gives:

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  17. Which of the following substituted phenols is the strongest acid?

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  18. CH(3)CH(2)CH=CH(2)underset(H(2)O.H(2)O(2).OH^-)overset(B(2)H(6))rarrZ ...

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  19. The compound that is most difficult to protonate is

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  20. The structure of intermediate A in the following reaction, is

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