Analyze the following scenario: A solution has a pH of 7.0, and the pKa of the acid is 6.0. What does this indicate about the predominant species and why?

• A. Conjugate acid predominates because pH is greater than pKa
• B. Equal concentrations of conjugate acid and base because pH equals pKa
• C. Conjugate base predominates because pH is greater than pKa
• D. Cannot be determined

Answer: (C)