9701/42 · Oct/Nov 2023
A Level Structured Questions · 100 marks · 9 questions
- Question 110 marks
Iodination of propanone: orders from the rate equation, a zero-order graph, and a suggested four-step mechanism.
- Question 211 marks
A benzoic acid and sodium benzoate buffer: pH and concentrations, and the Ksp and solubility of magnesium benzoate.
- Question 318 marks
Vanadium and iron electrode potentials, predicting reactions, cell potentials, and finding the Avogadro constant by electrolysis.
- Question 48 marks
EDTA as a polydentate ligand, stability constants, and colours of copper complexes.
- Question 56 marks
Thermal decomposition of Group 2 ethanedioates, and a manganate(VII) titration to find solubility.
- Question 610 marks
Monodentate ligands, why transition elements form complexes, and geometry and isomerism of rhodium, gold and nickel complexes.
- Question 711 marks
Making benzoic acid from benzene, carbon-13 NMR of methylbenzene, and reactions of benzoic acid.
- Question 812 marks
Polylactic acid as a condensation polymer, proton NMR of lactic acid, and gas-liquid chromatography.
- Question 914 marks
Making diethylamine, relative basicity of amines, azo dyes, and amide formation with ethanoyl chloride.