Which of the following buffers will have the lowest pH? A) a solution containing 0.10 M HC₂H₃O₂ and 0.10 M NaC₂H₃O₂ B) a solution containing 0.20 M HC₂H₃O₂ and 0.20 M NaC₂H₃O₂ C) a solution containing 0.30 M HC₂H₃O₂ and 0.30 M NaC₂H₃O₂ D) They all have the same pH.

Question

Quizplus · Accepted Answer

The pH of a buffer solution depends on the ratio of the concentrations of the acid and its conjugate base, not their absolute concentrations. Since all solutions have the same ratio of HC2H3O2 to NaC2H3O2, they all have the same pH.

Which of the Following Buffers Will Have the Lowest PH