Question

Please help me with the titration curve diagram questions. Number 22 and 23. If you could also explain to me how you found the answer to the problem. Thank you!

Exhibit 16-3: Consider the Titration curve below for the titration of a weak acid with a stro base, NaOH, to answer the following question(s). Strong t weak Base tid equivalence point PH point a mL of NaOH added 22) Refer to Exhibit 16-3. How would the pH be determined for the aqueous solution in the titration at point A? A) The pH is determined using the concentration of weak acid that is in excess. B) The pH is determined using the Henderson-Hasselbalch equation. C) The pH is determined by solving for the pH of a basic salt. D) The pH is determined by solving for the pH of an acidic salt. 23) Refer to Exhibit 16-3. How would the pH be determined for the aqueous solution in the titration at the equivalence point? A) The pH would equal 7.0 at the equivalence point. B) The pH is determined using the concentration of strong base that is in excess. C) The pH is determined by solving for the pH of a basic salt. D) The pH is determined by solving for the pH of an acidic salt.

Answer 1

22) (b) is correct option

As point A pH is nearly constant so it is a buffer solution so use Henderson-Hasselbalch equation.

23) At equivalence point salt is formed.so pH is determined by solving for the pH of basic salt