Lesson Buffer solutions lessonWorksheet Buffer solutions worksheetLab Buffer solutions labTest Buffer solutions testQuiz Buffer solutions quizQuick answer: A buffer is a solution of a weak acid and its conjugate base that resists pH change. This AP Chemistry quiz checks buffer solutions with 10 multiple-choice questions and instant feedback; every answer comes with a short explanation.
The tests book with mark schemes · AP Chemistry
Every chapter in one PDF school book of 68 pages, to print or keep on your tablet.
See the book This buffer solutions quiz for AP Chemistry has quick multiple-choice questions with instant feedback. Need a refresher first? Read the lesson or do the worksheet on buffer solutions .
Ten multiple-choice questions on buffers, titration curves and indicators. Choose one answer for each and read the explanation after every question.
Level: AP Chemistry · Curriculum: AP Chem Unit 8
What is the pH of a buffer with equal concentrations of HA and A⁻? Which pair makes a buffer? A buffer has pKa 4.74 and ratio [A⁻]/[HA] = 10. What is its pH? What is true at half-equivalence in a weak acid titration? Which equivalence-point pH is typical for a weak acid with a strong base? Which indicator suits ethanoic acid with NaOH (equivalence near pH 8.7)? Which change increases buffer capacity at a fixed ratio? For which pH range does the CH₃COOH/CH₃COO⁻ buffer (pKa 4.74) work well? 25.0 cm³ of 0.100 mol/dm³ HCl is titrated with 0.100 mol/dm³ NaOH. What volume gives equivalence? Why should the Henderson–Hasselbalch equation not be used at equivalence? Henderson–Hasselbalch equation? — pH = pKa + log([A⁻]/[HA]) What is in a buffer? — Weak acid plus its conjugate base pH at half-equivalence? — pH = pKa Useful buffer range? — pKa ± 1 Equivalence pH, strong–strong? — 7 Equivalence pH, weak acid–strong base? — Above 7 Indicator for weak acid with strong base? — Phenolphthalein Buffer capacity is greatest when? — [A⁻] = [HA] Added acid reacts with which buffer part? — The conjugate base A⁻ Equivalence point means what? — Moles of base equal moles of acid Keep going with Lina
The tests book with mark schemes · AP Chemistry
Every chapter in one PDF school book of 68 pages, to print or keep on your tablet.
See the book 
