The following figure represents solutions that occur at various stages during the titration of a weak acid, HAHA, with NaOHNaOH. (The Na+Na+ ions and water have been omitted for clarity.) Which of the following statements are true?

(i) The equivalence point is represented in (iv).

(ii) Both (i) and (ii) are buffer solutions.

(iii) The highest pHpH is represented by (ii).

 

The following figure represents solutions at various stages of the titration of a weak acid, HA, with NaOH. (The Na⁺ ions and water molecules have been omitted for clarity.) To which of the following regions of the titration curve does each drawing correspond: (a) before addition of NaOH, (b) after addition of NaOH but before the equivalence point, (c) at the equivalence point, (d) after the equivalence point?

The following pictures represent solutions at various points in the titration of a weak acid with aqueous . (ions and solvent water molecules have been omitted for clarity.)

Which picture corresponds to each of the following points in the titration?

a. Before the addition of any

b. Before the equivalence point

c. At the equivalence point

d. After the equivalence point