determine-the-solution-with-the-greatest-buffer-capacity-among-the-representatio

Question

Determine the solution with the greatest buffer capacity among the representations of solutions shown below containing one or more of the following components: H₂A, KHA, and K₂A, where H₂A is a weak diprotic acid. Note that K⁺ ions and water were omitted from the representation for clarity.

Illustration of four buffer solutions for comparing buffer capacity in aqueous equilibrium.

Accepted Answer

(iv) has the greatest buffer capacity.

Answer

(i) has the greatest buffer capacity.

Answer

(ii) has the greatest buffer capacity.

Answer

(iii) has the greatest buffer capacity.

Answer

All of the buffer solutions have equal buffer capacity.