14 AP Multiple-Choice Review Questions Questions 1-3 will use the following information: Buffer 1 K, of Acid in Buffer 5.6 X 10-10 7.2 x 10-4 1.8 10-5 4.0 x 10-4 Buffer System NH/NH CI HF/NaF CH3COOH/NaCH3COO HNO/KNO, 2 3 4 6. The above di with 0.1 MH was titrated w Initial PH Same 1. Which of these buffer systems can absorb the greatest volume of 0.1 M NaOH without a major change in pH? Assume 100 mL of buffer solution in each case. (A) 1.0 M NHJ1.0 M NHC (B) 0.50 M HF/0.50 M NaF (C) 0.25 M CH,COOH/0.25 M NaCH,COO (D) 0.10 M HNO,/0.10 M KNO, 2. Arrange the four buffer systems in the table from lowest to highest pH by buffer #. Assume each buffer has equal concen- trations of both components, and all concentrations are 0.10 M. (A) 1