Arrange the following acids in the increasing order of their pKa values a)Benzoic acid b) 4- Nitrobenzoic acid c) 4- Methoxy benzoic acid
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In 4-nitrobenzoic acid nitro group will show -I effect and make nitrobenzoic acid more deficit of electrons means more acidic(as lewic acid are acceptor of electrons). But methoxy group will show +I effect and increase the electron density means less acidic and bezkic acid will remain normal. So increasing order of acidity will be c<a<b
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