In an experiment, 20.0 mL of an unknown monoprotic acid solution is titrated with 0.106 M sodium hydroxide solution at room temperature. The titration curve is shown below. Which of the following is the most reasonable Ka of the unknown acid? 12 10 8 Hd 6 4 N 2 0 0 4 8 12 16 20 24 28 32 36 Volume Base Added (mL) a. 8 8 b. 4.5 0.65 c. d. 2 x 10-5 1 x 10-8 .
