Statement 1 : The pH of a basic buffer mixture is given by : 

$\mathrm{pH}={\mathrm{pK}}_{\mathrm{a}} + \log \frac{\left[\mathrm{Base}\right]}{\left[\mathrm{conjugate} \mathrm{acid}\right]}$

Statement 2 : The pH of an acidic buffer mixture is given by : 

$\mathrm{pH}={\mathrm{pK}}_{\mathrm{a}} + \log \frac{\left[\mathrm{conjugate} \mathrm{base}\right]}{\left[\mathrm{Acid}\right]}$

• A

  Both statements I and II are correct.

• B

  Statement I is correct and statement II is incorrect.

• C

   Statement I is incorrect and statement II is correct.

• D

  Both statements I and II are incorrect.