Two 25.0-mL samples of unknown monoprotic weak acids, A and B, are titrated with 0.100 M NaOH solutions.

The titration curve for each acid is shown below. Which of the two weak acid solutions is more concentrated? Which of the two weak acids has the larger K_a?

(a) Acid B is more concentrated and has the larger K_a.

(b) Acid A is more concentrated and has the larger K_a.

(c) Acid A is more concentrated and Acid B has the larger K_a.

(d) Acid B is more concentrated and Acid A has the larger K_a.

Transcribed Image Text:

Hd 14 12 10 8 6 4 2 0 0 5 Acid A 10 15 20 25 30 35 40 45 Volume of NaOH added (mL) 50 Hd 14 12- 10- 8- 6- 4- 2- 0- 0 5 Acid B 10 15 20 25 30 35 40 45 50 Volume of NaOH added (ml)