Respuesta :
Answer:
The base-dissociation constant, Kb,for the conjugate base of benzoic acid is :
[tex]K_{b}=1.54\times 10^{-10}}[/tex]
Explanation:
The product of acid dissociation constant and base dissociation constant is equal to the water dissociation constant.The general formula for the reaction is:
[tex]K_{w}=K_{a}K_{b}[/tex]
For the acid dissociation reaction:
[tex]HA + H_{2}O\rightleftharpoons H^{+}+A^{-}[/tex]
The conjugate base for the acid is A-
The acid is HA . and its Ka is given.
The value of Kw is fixed at a given temperature , which is equal to:
[tex]K_{w}=10^{-14}[/tex]
[tex]K_{a}=6.5\times 10^{-5}[/tex]
[tex]K_{b}=\frac{10^{-14}}{6.5\times 10^{-5}}[/tex]
[tex]K_{b}=1.54\times 10^{-10}}[/tex]
