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1 a certain buffer system that contained 15 ml of 01m ha

1. A certain buffer system that contained 15 mL of 0.1M HA and 50 mL of 0.6M A^- was found to have a pH of 9. What would be the K_a for that buffer system?

pH= pKa + log[A-]/[HA]

2. Select a pH different from any used in the experiment above. Design a buffer that could create that pH by determining the volumes of the acidic and basic buffer components.

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