Chemistry 7404 Paper 1 June 2022, AQA AS-Level Past Papers with Mark Schemes

AQA AS Level Chemistry (7404) Jun 2022

معلم موافق رایگان بودن است.

The exam focuses on inorganic and physical chemistry, addressing ionization energy trends in Group 2, redox reactions, and gaseous equilibria. Key topics include titration procedures and errors, stoichiometry calculations, and intermolecular force comparisons. Analytical techniques involve mass spectrometry of antimony isotopes and Kc value derivations for equilibria involving ammonia. Practical applications feature hydrogen bonding diagrams, iodine redox processes, and solution testing for ions like ammonium and halides. Quantitative tasks integrate empirical formula determination, time-of-flight calculations, and mole-based stoichiometry. Molecular geometry, electronegativity effects, and experimental uncertainties are explored to enhance theoretical and practical understanding.