Q19.6P - Chemistry: Molecular Nature Of Matter And Change

Question

Which of these factors influence buffer capacity? How? (a) Conjugate acid-base pair (b) pH of the buffer (c) Concentration of buffer components (d) Buffer range (e) ${\mathbf{\text{pK}}}_{\mathbf{\text{a}}}$ of the acid component.

Step-by-Step Solution

Answer

The option (c) is the factor that influence the buffer capacity which is concentration of buffer components.

Step 1: Ionic Equilibrium

Ionic equilibrium refers to the equilibrium that exists in the solution of weak electrolytes between unionized molecules and ions.

Step 2: The factors influencing buffer capacity

Only c. concentration of buffer components has an effect on buffer capacity among the alternatives. We know that every conjugate pair, at any pH, may be utilised to construct a large capacity buffer. When equivalent amounts of weak acid and weak base are dissolved, their concentrations are relatively high, a high-capacity buffer is formed.

Therefore, concentration of buffer components.