Which of the following compounds has the maxi | vedclass

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

Question

(B) The acidity of substituted benzoic acids depends on the stability of the conjugate base (carboxylate ion) formed after the loss of a proton. In $o

Vedclass · Accepted Answer

$2,6-$dihydroxybenzoic acid

Vedclass · Answer

(B) The acidity of substituted benzoic acids depends on the stability of the conjugate base (carboxylate ion) formed after the loss of a proton. In $o$-hydroxybenzoic acid (Salicylic acid),the hydroxyl group at the ortho position forms an intramolecular hydrogen bond with the carboxylate group after the loss of a proton,which significantly stabilizes the conjugate base. In $2,6$-dihydroxybenzoic acid,there are two hydroxyl groups at ortho positions. The intramolecular hydrogen bonding is even more pronounced,and the inductive effect of the two hydroxyl groups further stabilizes the carboxylate anion. Therefore,$2,6$-dihydroxybenzoic acid has the highest $K_{a}$ value among the given options due to the strong stabilization of its conjugate base by intramolecular hydrogen bonding and inductive effects.

Which of the following compounds has the maximum $K_{a}$ value?

Similar Questions

$pH$ of $0.1 \ M$ $NH_3$ aqueous solution is $(K_b = 1.8 \times 10^{-5})$

The degree of ionization of $0.4 \ M$ acetic acid will be $(K_{a} = 1.8 \times 10^{-5})$.

If the degree of dissociation is $1.30\%$,what is the $K_a$ for $0.1 \ M \ CH_3COOH$?

In $20 \, mL$ of $0.4 \, M$ $HA$ solution,$80 \, mL$ of water is added. Assuming volume to be additive,the $pH$ of the final solution is ($K_a$ of $HA = 4 \times 10^{-7}, \log 2 = 0.3$).

$A$ weak base is $1.3\%$ dissociated in its aqueous solution. If $K_b$ for the weak base is $1.69 \times 10^{-5}$ at $298 \text{ K}$, find the concentration of the aqueous solution of the weak base. (in $\text{ M}$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module