Leaving Cert Chemistry 2019

The 2019 Leaving Cert Chemistry exam paper and official marking scheme, free below as direct PDF links from the State Examinations Commission archive.

Higher Level

Exam PaperMarking Scheme
What's in the 2019 Higher Level paper?
  • Q1 volumetric analysis, dissolved oxygen, titration, iodine-thiosulfate · 50 marks
  • Q2 organic preparation, oxidation, dehydration, yield calculation · 50 marks
  • Q3 relative molecular mass, gas laws, volatile liquid, intermolecular forces · 50 marks
  • Q4 short-answer, atomic structure, bonding, mole calculations · 50 marks
  • Q5 periodic table, atomic number, noble gases, group trends · 50 marks
  • Q6 structural isomers, oil refining, octane number, heat of reaction · 50 marks
  • Q7 acids and bases, conjugate pairs, self-ionisation of water, ph · 50 marks
  • Q8 alcohols, boiling points, oxidation of alcohols, esters · 50 marks
  • Q9 rates of reaction, heterogeneous catalysis, activation energy, collision theory · 50 marks
  • Q10 free radicals, reaction mechanisms, atomic theory, mole calculations · 50 marks
  • Q11 electronegativity, molecular shape, chemical equilibrium, greenhouse effect · 50 marks

Ordinary Level

Exam PaperMarking Scheme
What's in the 2019 Ordinary Level paper?
  • Q1 ethyne preparation, unsaturation, bromine test, experimental · 50 marks
  • Q2 volumetric analysis, acid-base titration, primary standard, concentration calculation · 50 marks
  • Q3 dissolved solids, flame tests, chloride test, experimental · 50 marks
  • Q4 short answer, atomic theory, gas laws, redox, water hardness · 50 marks
  • Q5 elements, electron arrangement, electronegativity, bonding · 50 marks
  • Q6 hydrocarbons, homologous series, iupac naming, lpg · 50 marks
  • Q7 rates of reaction, surface area, graphing, experimental · 50 marks
  • Q8 alcohols, aldehydes, carboxylic acids, oxidation, molecular shape · 50 marks
  • Q9 acids and bases, ph, poh, water treatment · 50 marks
  • Q10 fractional distillation, chemical equilibrium, le chatelier, mole calculations · 50 marks
  • Q11 atomic structure, isotopes, avogadro constant, nitrogen cycle, corrosion · 50 marks

Revise Chemistry by topic

Atomic Theory & the Periodic TableChemical Bonding & Molecular ShapeOxidation–Reduction & ElectrochemistryStoichiometry, the Mole, Formulas & EquationsVolumetric Analysis (Titrations)Acids, Bases & pHRates of ReactionChemical EquilibriumThermochemistry (Energetics)Organic Chemistry, Hydrocarbons & FuelsWater, Environmental & Atmospheric ChemistryIndustrial ChemistryLaboratory Skills & Techniques
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Questions come from the official State Examinations Commission papers. Every link opens the original PDF on examinations.ie.