Which of the following acids has the smallest dissociation constant?

Question

Which of the following acids has the smallest dissociation constant? (A) CH 3 CHFCOOH (B) FCH2CH2COOH (C) BrCH2CH2COOH (D) CH3CHBrCOOH

Tardigrade Admin · Accepted Answer

Group or atom attached with - COOH group shows negative inductive effect, makes the acid stronger or acid has the larger dissociation constant. -Br shows poor negative inductive effect and also far away from - COOH, which makes Br CH 2 CH 2 COOH weakest acid and hence, it has smallest dissociation constant.

Q. Which of the following acids has the smallest dissociation constant?

$C H_{3} C H FCOO H$

$FC H_{2} C H_{2} COO H$

$B r C H_{2} C H_{2} COO H$

$C H_{3} C H B r COO H$

Q. Which of the following acids has the smallest dissociation constant?

CH3​CHFCOOH

FCH2​CH2​COOH

BrCH2​CH2​COOH

CH3​CHBrCOOH

$C H_{3} C H FCOO H$

$FC H_{2} C H_{2} COO H$

$B r C H_{2} C H_{2} COO H$

$C H_{3} C H B r COO H$