Explanation:
According to the Handerson equation,
pH = [tex]pK_{a} + log \frac{\text{salt}}{\text{acid}}[/tex]
or, pH = [tex]pK_{a} + log \frac{\text{conjugate base}}{\text{acid}}[/tex]
Putting the given values into the above equation as follows.
pH = [tex]pK_{a} + log \frac{\text{conjugate base}}{\text{acid}}[/tex]
5.0 = 6.0 + log \frac{\text{conjugate base}}{\text{acid}}[/tex]
[tex]log \frac{\text{conjugate base}}{\text{acid}}[/tex] = -1.0
or, [tex]\frac{\text{conjugate base}}{\text{acid}} = 10^{-1.0}[/tex]
= 0.1
Therefore, we can conclude that molar ratios of conjugate base to weak acid for given solution is 0.1.
