Chemistry 7405/2 June 2020

AQA A Level Chemistry (7405) Jun 2020

معلم موافق رایگان بودن است.

The exam evaluates organic and physical chemistry, including reaction kinetics, stereoisomerism, and spectroscopy. Topics cover rate equations, reaction mechanisms, and functional group identification in complex molecules. Practical sections include aspirin synthesis, yield calculations, and recrystallization methods. Analytical methods assess NMR spectroscopy, chemical shifts, splitting patterns, and 13C NMR peaks. Structural analysis explores isomerism, functional group reactivity, and hydrolysis products. Equilibrium topics involve Kc calculations, nucleophilic addition mechanisms, and equilibrium concentrations in aqueous systems. The paper emphasizes quantitative reasoning, experimental techniques, and the application of organic and physical principles to real-world chemical contexts.