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Which of the following compound will hav...

Which of the following compound will have the smallest `pK_(a)` value ?

A

Benzoic acid

B

Fromic acid

C

Acetic acid

D

Phenylacetic acid

Text Solution

Verified by Experts

The correct Answer is:
B
Formic acid is strongest acid among these and hence has smallest `pK_(a)` value .
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MODERN PUBLICATION-ALDEHYDES , KETONES AND CARBOXYLIC ACIDS-Level -II (Multiple Choice Questions )
  1. When acetic acid reacts with ketone , the product formed is :

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  2. Which of the following most readily undergoes hydrolysis ?

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  3. Sodium phthalamide overset(Br(2).KOH)toXoverset(H(3)O^(+))toY The pro...

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  4. In the reaction , BrCH(2)CH(2)CH(2)Brunderset(2.H(3)O^(+))overset(1....

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  5. A halogen compound on hydrolysis with dilute alkali followed by acidif...

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  6. The product of the reaction , Methanol +COoverset(Rh)to is :

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  7. -COOH group can be converted to -NH(2) group by :

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  8. Benzoic acid may be converted to ethyl benzoate by reaction with :

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  9. underset((ii)H(3)O^(+))overset((i)CO(2))to In the above reaction , ...

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  10. The - Oh group of an alcohol or COOH group of a carboxylic acid can be...

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  11. In a set of reactions propionic acid yielded compound D, CH(3)CH(2)COO...

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  12. Which of the following presents the correct order of the acidity in th...

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  13. Propionic acid with Br(2)//P yield a dibromo product . Its structure w...

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  14. Identify the correct oreder of boiling points of the following compoun...

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  15. The relative reactivities of acyl compounds towards nucleophilic subst...

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  16. Which of the following compound will have the smallest pK(a) value ?

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  17. When propanoic acid is treated with aqueous sodium - bicarbonatate, CO...

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  18. Formic acid and acetic acid may be distinguished by the reaction with ...

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  19. CH(3)CH(2)COOHunderset(redP)overset(Cl(2))toAoverset(alc KOH)to B,B i...

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  20. The product (B) of the reaction is

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