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(C) The acidic strength is determined by the stability of the conjugate base.$(ii)$ $p$-methoxybenzoic acid: The $-OCH_3$ group exerts a strong $+M$ (

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$ii < i < iii$

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(C) The acidic strength is determined by the stability of the conjugate base.$(ii)$ $p$-methoxybenzoic acid: The $-OCH_3$ group exerts a strong $+M$ (mesomeric) effect,which destabilizes the carboxylate anion,making it the least acidic.$(i)$ benzoic acid: This is the reference compound.$(iii)$ $o$-methoxybenzoic acid: Due to the ortho effect (or Steric Inhibition of Resonance,$SIR$),the $-COOH$ group is forced out of the plane of the benzene ring,which reduces the resonance and increases the acidity significantly compared to benzoic acid.Therefore,the increasing order of acidic strength is $(ii) < (i) < (iii)$.

Rearrange the following in the increasing order of acidic strength:
$(i)$ benzoic acid $(ii)$ $p$-methoxybenzoic acid $(iii)$ $o$-methoxybenzoic acid

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Rearrange the following in the increasing order of acidic strength:$(i)$ benzoic acid $(ii)$ $p$-methoxybenzoic acid $(iii)$ $o$-methoxybenzoic acid