3.1 Proton transfer reactions
- Syllabus
- First assessment 2025
- Topic
- 3.1
- Level
- SL
• Acid = proton donor
• Base = proton acceptor
• Deduce acid and base in a reaction; distinguish base and alkali
• Differ by one proton
• Deduce conjugate acid/base formulas
• Can act as both acid and base
• Write equations showing acid and base behaviour
• pH = −log₁₀[H⁺]
• [H⁺] = 10⁻ᵖᴴ
• Calculate pH and [H+]; include universal indicator and pH probe use
• Kw = [H⁺][OH⁻]
• Acidic: [H⁺] > [OH⁻]
• Neutral: [H⁺] = [OH⁻]
• Basic: [H⁺] < [OH⁻]
• Recognize acidic, neutral, and basic solutions from [H+] and [OH-]
• Differ in extent of ionization
• Equilibrium favors weaker conjugate
• Distinguish strong/weak from concentrated/dilute
• Acid + metal oxide/hydroxide/carbonate/hydrogencarbonate
• Formulate equations and identify parent acids/bases of salts
• Strong acid-strong base titrations
• Characteristic shapes
• Sketch and interpret intercept and equivalence point for monoprotic titrations