Select the correct option if pH=pKa in the Henderson-Hasselbalch equation?
A[HA]=[A-]
B[HA]>[A-]
C[HA]<[A-]
D[HA]=log[A-]
Answer:
A. [HA]=[A-]
Read Explanation:
Definition: The Henderson-Hasselbalch equation, pH = pKa + log([A–]/[HA]), can be used to calculate the pH of a buffer.
-The equilibrium concentrations of the conjugate acid-base pair used to create the buffer solution are denoted by [HA] and [A–] in this equation.
-When [HA] = [A–], the pH of the solution equals the pKa of the acid.
