Titration Graph, pKa, Equivalence Point | AP Chemistry Daily Review Unit 8 #apchem #apchemistry

3-Second Blueprint (English)

1. Equivalence occurs at the steepest pH inflection midpoint; for weak acid + strong base, conjugate base hydrolysis gives pH > 7.
2. At the half-equivalence volume, [HA] equals [A-] in the buffer region, so pH read off the y-axis directly equals the acid pKa.
3. Dominant species progress from weak acid HA initially, to HA/A- buffer, hydrolyzed A- at equivalence, and excess OH- afterward.