How does (i) an electron with drawing group (EWG) and (ii) an electron donating group (EDG) influence the acid strength of carboxylic end?
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i) The electron withdrawing group stabilizes the RCOO- and strengthens the acid. They are usually happens at para/ortho place of an electrophilic substitution like aromatics compounds.
ii) The electron donating group stabilizes the RCOO- and weakens the acid. It resonates the aromatic ring by forming a resonate electron density.
iii) The influence of the inductive effect on acidity is understood in terms of conjugate base RCOO- from the above explanation.
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