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  • How to solve this problem- Which of the following is the strongest acid?

Which of the following is the strongest acid?

  • Option 1)

    HCOOH\:(pka=3.77)

  • Option 2)

    C_{6}H_{5}COOH\:(pka=4.22)

  • Option 3)

    CH_{3}COOH\:(pka=4.71)

  • Option 4)

    CH_{3}CH_{2}COOH\:(pka=4.88)

 

Answers (1)

As we learnt in

Basic strength and Kb and pKb values -

Basic strength is directly proportional to Kb values and inversely proportional to pKb values.

-

 

  Acidic strength is inversely proportional to pKa values therefore, HCOOH is the strongest acid.


Option 1)

HCOOH\:(pka=3.77)

Option is Correct

Option 2)

C_{6}H_{5}COOH\:(pka=4.22)

Option is incorrect

Option 3)

CH_{3}COOH\:(pka=4.71)

Option is incorrect

Option 4)

CH_{3}CH_{2}COOH\:(pka=4.88)

Option is incorrect

Posted by

Vakul

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