EXAM SCRIPT 2026 FULL QUESTIONS AND
CORRECT ANSWERS ALREADY PASSED
◉ Definition - Lewis acid / base. Answer: Electron pair acceptor / donor
◉ Formula - dissociation constant of water, concentration of protons and
concentration of hydroxide ions. Answer: K_w = [H+][OH-]
◉ Describe how a buffer is formed. Answer: Mixing a weak acid and the
salt of its conjugate base OR partially reacting a weak acid with a strong
base
◉ Definition - conjugate acid-base pair. Answer: A pair of species
differing by a single proton
◉ Explain the difference between amphiprotic and amphoteric species.
Answer: Amphoteric - can act as a acid or a base; amphiprotic - can
donate or accept proton
◉ Outline how to distinguish between a strong and weak acid. Answer:
Electrical conductivity is greater for stronger acid (fully dissociated);