Rearrange the following in the increasing ord | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

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

Vedclass · Accepted Answer

$ii < i < iii$

Vedclass · Answer

(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

Similar Questions

Identify $Z$ in the following reaction:
$1,2-bis(hydroxymethyl)benzene$ $\xrightarrow[\text{Vigorous Oxidation}]{} X$ $\xrightarrow[\text{Dry Heating}]{} Z$

When chloroform is hydrolysed with $KOH$,the final product is:

Among the following compounds, the one$(s)$ that give$(s)$ effervescence with aqueous $NaHCO_{3}$ solution is (are):
$I. (CH_{3}CO)_{2}O$
$II. CH_{3}COOH$
$III. PhOH$
$IV. CH_{3}COCHO$

Which of the following reduces Tollen's reagent?

The $pK_a$ values of four carboxylic acids are $4.76, 4.19, 0.23$ and $3.41$ respectively. The $pK_a$ value of the strongest carboxylic acid among them is

Vedclass Test Series

Exam Paper Generator

Online Exam Module

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