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Q.
The strongest acid amongst the following compounds is
Aldehydes Ketones and Carboxylic Acids
Solution:
$-I$ effect exerting (electron withdrawing) groups increases the acidic strength of an acid by withdrawing electron density towards itself, they weaken $O—H$ bond and thus, the release of $H^{+}$ ion by an acid becomes easier. Whereas $+I$ effect exerting ($e^{-}$ releasing) groups decreases the acidic strength by donating electron density to O-atom. Further, -I effect decreases with distance. Thus, the acidic strength of the given acids would be
strongest acid than other given compounds
