Solution: The following plot below shows a titration curve for the titration of 1.00 L of 1.00 M diprotic acid H2A with NaOH. Which point(s) a-d represent(s) the H 2X/HX - buffer region?(a) point a(b) point b(c

Solution: The following plot below shows a titration curve for the titration of 1.00 L of 1.00 M diprotic acid H2A with NaOH. Which point(s) a-d represent(s) the H 2X/HX - buffer region?(a) point a(b) point b(c

The following plot below shows a titration curve for the titration of 1.00 L of 1.00 M diprotic acid H_{2}A with NaOH. Which point(s) a-d represent(s) the H _{2}X/HX ^{-} buffer region?

(a) point a

(b) point b

(c) point c

(d) point d

(e) points a and c

We’re being asked to **determine which point(s) a–d** represent(s) **the H _{2}X/HX– buffer region**, given the following titration curve for the titration of 1.00 L of 1.00 M diprotic acid H

Since **H _{2}A is a diprotic acid**, this means it has two equivalence points.

Recall that the ** equivalence point** is the point in a titration curve where the pH increases abruptly. In the given titration curve, the two equivalence points are represented by