The dissociation constants of two acids HA_1 | vedclass

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

Question

(B) The relative strength of two acids is given by the ratio of their degrees of dissociation,which is equal to the square root of the ratio of their

Vedclass · Accepted Answer

$4:1$

Vedclass · Answer

(B) The relative strength of two acids is given by the ratio of their degrees of dissociation,which is equal to the square root of the ratio of their dissociation constants: $\frac{	ext{Strength}_1}{	ext{Strength}_2} = \sqrt{\frac{K_{a_1}}{K_{a_2}}}$ Given $K_{a_1} = 3.14 	imes 10^{-4}$ and $K_{a_2} = 1.96 	imes 10^{-5}$. $\frac{	ext{Strength}_1}{	ext{Strength}_2} = \sqrt{\frac{3.14 	imes 10^{-4}}{1.96 	imes 10^{-5}}} = \sqrt{\frac{31.4 	imes 10^{-5}}{1.96 	imes 10^{-5}}} \approx \sqrt{16} = 4$. Thus,the relative strength is $4:1$.

The dissociation constants of two acids $HA_1$ and $HA_2$ are $3.14 \times 10^{-4}$ and $1.96 \times 10^{-5}$ respectively. The relative strength of the acids will be approximately:

Similar Questions

Which of the following species acts as a base,according to the Bronsted-Lowry theory?
$HCl + NH_3 \rightleftharpoons NH_4^+{_{\text{(aq)}}} + Cl^-{_{\text{(aq)}}}$

Among the following,the weakest base is

Which are the bases of the above reaction $HCl_{(aq)} + H_2O_{(aq)} \rightleftharpoons H_3O^{+}_{(aq)} + Cl^{-}_{(aq)}$? Which base is weak?

The $pK_a$ values in $H_2O$ of picric acid,acetic acid,and phenol are in the order:

An example of a Lewis acid is

Vedclass Test Series

Exam Paper Generator

Online Exam Module