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IB Chemistry HL 3.1.16 Hl Buffer Solutions Questions

Use real HL exam questions to identify buffer mixtures, explain their resistance to pH change and calculate the resulting buffer pH.

Syllabus
First assessment 2025
Course
Chemistry HL
Level
HL

Exam points

  • Write the conjugate-pair equations that consume added H+ or OH− in an acidic or basic buffer.
  • Explain why a weak acid/conjugate-base or weak-base/conjugate-acid pair resists a large pH change when a small amount of strong acid or base is added.
  • Determine whether mixtures form a buffer and calculate or interpret buffer pH after stoichiometric neutralization using the remaining conjugate-pair concentrations.

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Study 3.1.16 (HL)—Buffer solutions conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Chemistry HL 3.1.16 Hl Buffer Solutions Questions question 1

[Maximum number: 1]

Phenylethene (styrene) is produced from ethylbenzene in a gas-phase equilibrium.

Figure for Question IB Chemistry HL 3.1.16 Hl Buffer Solutions Questions question 1 — IB Chemistry HL

Describe how a buffer solution could be made from aqueous benzoic acid and aqueous sodium hydroxide.

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