The images below show the different stages in the titration of a weak acid, HA, with KOH. Select the image that shows the titration curve after the addition of KOH but before the equivalence point. (K⁺ ions and water are not shown for clarity).

The images below show the titration curves of equal amounts of weak and strong monoprotic acid titrated with the same concentration of strong base. 

Which of the following statements is true?

The images below show the individual titration curve of two weak bases, a and b, and a strong acid

Which of the following statements is true?

The images below show the individual titration curve of two weak acids, a and b, with a strong base

Which of the following statements is true?

a. Acid a has a larger K_a than acid b

b. Acid b has a larger K_a than acid a

c. Acid a and b have equal K_a

d. None of the above

The following is a curve when a weak monoprotic acid is titrated against a strong base. Label the following titration events on the given titration curve:

A) The point where the pH of the solution is solely due to the presence of the weak acid.

B) The point where all of the weak acid has been neutralized by the strong base.

C) The region of the curve where there is a buffer solution present.

A 0.451-g sample of an unknown monoprotic acid is titrated with 0.150 M NaOH. The resulting titration curve is shown here. Determine the molar mass and pK_a of the acid.