QCE ChemistryPractice Examination 19

This paper covers

• Unit 3 Topic 2 Oxidation & Reduction anchored on the permanganate-iron(II) redox titration for water-quality testing (half-equation balancing in acidic conditions, MnO4-/Fe2+ 1:5 stoichiometry, oxidising/reducing agent identification, self-indicating endpoint, E°cell)
• Unit 3 Topic 1 Equilibrium, Acids & Redox: Kc expressions and ICE calculations, Le Chatelier's Principle via collision theory, Brønsted-Lowry conjugate pairs, pH/pOH, weak-acid Ka and percent ionisation, buffers, volumetric analysis and titration-curve interpretation
• Unit 4 Topic 1 Properties & Structure of Organic Materials: IUPAC nomenclature of the 12 derivative classes, structural and cis-trans isomerism, intermolecular forces explaining physical-property trends, addition/condensation polymers and proteins
• Unit 4 Topic 2 Chemical Synthesis & Design: six core reaction types, Markovnikov addition, oxidation of alcohols, esterification, multi-step pathway design, Haber and contact processes, limiting reagent and percentage yield, green-chemistry/atom-economy evaluation
• Quantitative water-quality application: stoichiometric back-calculation through dilution to original sample concentration, mass concentration in mg/L, percentage purity of FeSO4·7H2O, and evidence-based evaluation against Australian Drinking Water Guidelines
• Assessment Objectives AO1–AO4 with QCAA cognitive-verb precision (describe/explain, apply/calculate/deduce, analyse/compare, interpret/evaluate/justify) and Band-A marking standards

Students are permitted to bring into the examination the materials normally allowed for this subject. Answer all questions in the spaces provided.

This is an ATARMAxxing practice paper. It is not an official examination and is not affiliated with, endorsed by, or produced by the VCAA, NESA or the QCAA.