Question

Which of the following is the correct order of acidity of carboxylic acids?

(i) $Cl_{3}CCOOH > Cl_{2}CHCOOH > ClCH_{2}COOH$

(ii) $CH_{3}CH_{2}COOH > \left( CH_{3} \right)_{2}CHCOOH > \left( CH_{3} \right)_{3}$ $$CCOOH$$

(iii) $F_{2}CHCOOH > FCH_{2}COOH > ClCH_{2}COOH$

• A. (i) and (ii)
• B. (ii) and (iii)
• C. (i) and (iii)
• D. (i), (ii) and (iii)

Answer 1

Answer: (D)

(i), (ii) and (iii)

Answer 2

: The strength of the acid increases with the inductive effect of the electronegative group attached to it (-I effect). The strength of the acid decreases with the presence of electron releasing group.