Which of the following represents the correct order of the acidity in the given compounds?

Electron withdrawing substituent (-I, -M group) would disperse the negative charge and hence stabilize the carboxylate ion and thus increase acidity of the parent acid. On the other hand, electron- releasing substituents would intensity the negative charge, destabilise the carboxylate ion and thus decrease acidity of the parent acid. Electronegativity decreases in order F > Cl > Br and hence –I effect also decreases in the same order, therefore the correct option is Carboxylic Acid and Its Derivatives 45 [FCH₂COOH > ClCH₂COOH > BrCH₂COOH > CH₃COOH]