QCE ChemistryPractice Examination 2

This paper covers

• Carbonate equilibria in seawater: Kc expressions, Qc vs Kc, and Le Chatelier reasoning for rising atmospheric CO2
• Bronsted-Lowry acid-base theory: conjugate pairs, Ka1/Ka2 of carbonic acid, pH/pOH and the bicarbonate buffer
• Quantitative acid-base chemistry: weak-acid pH, dilution, strong-acid/base pH, Henderson-Hasselbalch
• Volumetric analysis: standardisation and seawater alkalinity titration with follow-through marking
• Redox and electrochemistry: oxidation states of carbon/sulfur/nitrogen, galvanic cell EMF, electrolysis/Faraday
• Organic structure, naming, isomerism and intermolecular forces across the twelve hydrocarbon-derivative classes
• Core organic reaction types: combustion, esterification (with Kc), nucleophilic substitution, addition (Markovnikov), oxidation
• Industrial synthesis and green chemistry: Haber process, contact process, biodiesel/bioethanol, limiting reagent and percentage yield
• Carbonate saturation state (omega) and CaCO3 dissolution as an evaluative ocean-acidification application
• AO1-AO4 cognition coverage: describe/explain, apply/calculate/deduce, analyse/compare, interpret/evaluate/justify against stimulus data

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.