QCE ChemistryPractice Examination 17

This paper covers

• Unit 3 — Chemical equilibrium: Kc expressions and ICE calculations, Le Chatelier (concentration/pressure/temperature) and collision-theory mechanism
• Unit 3 — Acids and bases: Bronsted-Lowry conjugate pairs, strong/weak distinction, pH/pOH, Ka/Kb, buffers and Henderson-Hasselbalch, acid-base titration and indicator choice
• Unit 3 — Redox and electrochemistry: oxidation-state assignment, half-equation balancing in acid, galvanic cell labelling and E°cell, ranking oxidising/reducing agents, electrolysis and Faraday stoichiometry, aluminium/copper industrial cells
• Unit 4 — Organic structure: the 12 hydrocarbon-derivative classes, IUPAC naming, structural and cis-trans isomerism, intermolecular forces governing boiling point and solubility
• Unit 4 — Identification of an unknown organic compound: deducing functional-group class and IUPAC name from boiling point, water solubility, pH/litmus, oxidation and combustion (empirical → molecular formula) test data
• Unit 4 — Macromolecules: addition and condensation polymers, polyesters/polyamides, proteins and peptide bonds, carbohydrates, triglycerides and biodegradable PLA
• Unit 4 — Organic reactions and synthesis: combustion, nucleophilic substitution, elimination, Markovnikov addition, oxidation of alcohols, Fischer esterification, multi-step pathway design
• Unit 4 — Industrial chemistry and green chemistry: Haber and contact processes, biodiesel and bioethanol, atom economy, limiting-reagent and percentage-yield stoichiometry
• Assessment of QCAA Objectives AO1 (describe/explain), AO2 (apply/calculate/deduce), AO3 (analyse/compare), AO4 (interpret/evaluate/justify) only
• Band A standards: full cause-and-effect chains, formula-substitution-units in every calculation, conclusion plus separately-credited reasoning, evidence referenced explicitly from stimulus

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.