OCR A

OCR A LEVEL CHEMISTRY EXAMINATION- 2026 ORGANIC SYNTHESIS (Advanced Organic Chemistry – Reaction Pathways & Mechanisms) Qualification: A Level Chemistry (OCR Specification A) Paper Code: H432/02 Topic Area: Organic Synthesis & Functional Group Transformations

OCR A LEVEL CHEMISTRY EXAMINATION- 2026 SYNTHETIC ROUTES & ORGANIC PATHWAYS (Organic Chemistry – Multi-Step Synthesis & Reaction Sequences) Qualification: A Level Chemistry (OCR Specification A) Paper Code: H432/02 Topic Area: Organic Synthesis & Reaction Pathways

Multi-step organic synthesis Functional group interconversions Reaction conditions and reagents Mechanisms (addition, substitution, elimination) Retrosynthetic analysis Selectivity and reaction pathways

OCR A LEVEL CHEMISTRY EXAMINATION- 2026 ENTHALPY DEFINITIONS (Physical Chemistry – Energetics) Qualification: A Level Chemistry (OCR Specification A) Paper Code: H432/01 Topic Area: Enthalpy & Energy Changes

Fundamental definitions (e.g., mole, molar mass, Avogadro constant) Bonding terminology (ionic, covalent, dative bonding) Energetics (enthalpy changes, activation energy) Kinetics and equilibrium terms Acids and bases (Brønsted–Lowry theory) Redox definitions (oxidation states, electron transfer) Organic chemistry terminology (functional groups, isomerism)

Origin of colour in transition metal ions d–d electronic transitions Splitting of d orbitals in different ligand fields Effect of ligands on colour (spectrochemical series) Absorption of light and complementary colours Complex ion formation and ligand exchange

a form of ADR in which the parties choose an impartial third party to hear and decide the dispute