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The carboxylic acid of least acidic stre...

The carboxylic acid of least acidic strength among the following is

A

p–nitrobenzoic acid

B

p–methylbenzoic acid

C

p–chlorobenzoic acid

D

p–methoxybenzoic acid

Text Solution

Verified by Experts

The correct Answer is:
D
Electron donating groups decrease acid strength of benzoic acid and electron withdrawing groups increase acidic strength. Order of +I effect is` −OMe gt −Me`, so, p-methoxy benzoic acid is weaker acid than p-methylbenzoic acid.
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ERRORLESS-CARBOXYLIC ACIDS-NCERT BASED QUESTIONS (Aromatic Carboxylic Acids)
  1. Which of the following is used as food preservative?

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  2. Which of these does not contain -COOH group?

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  3. The carboxylic acid of least acidic strength among the following is

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  4. What is IUPAC name for isophthalic acid

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  5. The major product obtanined on interaction of phenol with sodium hydr...

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  6. Which of the following does not give benzoic acid on hydrolysis?

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  7. Salicylic acid is prepared from phenol by

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  8. What will be the product , when carboxy phenol, obtained by Reimer Tie...

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  9. Which of the following aromatic acids is most acidic?

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  10. Silver benzoate reacts with bromine to form

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  11. o-Toluic acid on reaction with Br(2) + Fe gives

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  12. C(6)H(5)^(11)COOH on heating with Na(2)CO(3) releases

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  13. The reaction involved in the oil of winter green test is salicylic aci...

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  14. Benzene carbaldehyde is reacted with concentrated NaOH solution, to g...

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  15. Hydrogenation of C(6)H(5)CHOH-COOH over Rh-Al(2)O(3) catalyst in metha...

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  16. Benzoyl chloride is prepared from benzoic acid by

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  17. Find the missing frequencies in the following frequncy distribution wh...

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  18. Benzoic acid is less acidic than salicyclic acid because of

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  19. 4-Methyl benzene sulphoic acid reacts with sodium acetate to give :

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  20. The relative acidic strengths of benzoic acid, o-toluic acid and p-tol...

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