FY13CE Chemistry case studies
FY13CE Chemistry · Put your knowledge to work in context.
FY13CE Chemistry is a multiple-choice chemistry certification examination spanning eleven topic domains. It is aimed at candidates who need to demonstrate broad, working command of general chemistry - typically students finishing a pre-university or introductory university chemistry course, technicians validating subject knowledge, and tutors or instructors who want an external benchmark of their grasp of the material. Because the domain weightings are published, the exam rewards balanced coverage rather than deep specialization: bonding, stoichiometry, kinetics and equilibrium each carry roughly a tenth or more of the paper, while analytical techniques and inorganic periodicity are comparatively light. Questions test recall of definitions and trends, but the larger share require applying a principle - predicting a product, ranking boiling points, calculating a pH or a cell potential, or interpreting a rate or titration result. The FY13CE Chemistry case studies are 5 cases and about 2,519 words.
1Identifying Two Unlabelled Metals from Ionisation Energies
A quality-control laboratory receives two unlabelled metal samples, X and Y, from a recycling stream. Because no wet-chemistry bench is available on site, an analyst records the first four ionisation energies (kJ mol−1) by a spectroscopic method.
583 words, about 3 min2Why Repeated Distillation Cannot Produce Pure Ethanol
A small distillery ferments an 8.0% ethanol–water wash and plans to recover pure ethanol by repeated simple distillation. The operator believes each pass multiplies the ethanol concentration.
470 words, about 2 min3Calorimetry of Ethanol Combustion: Incomplete or Just Lossy?
A student determines the enthalpy of combustion of ethanol using a spirit burner under a copper can containing 150.0 g of water. The burner loses 2.50 g of ethanol.
482 words, about 2 min4Preparing and Testing a Phosphate Buffer at pH 7.40
A teaching laboratory needs 1.00 L of a 0.100 M phosphate buffer at pH 7.40 for an enzyme assay. The stock cupboard contains anhydrous sodium dihydrogen phosphate (NaH2PO4, M = 119.98 g mol−1), anhydrous disodium hydrogen phosphate (Na2HPO4, M = 141.96 g mol−1), 1.00 M HCl and 1.00 M NaOH.
482 words, about 2 min5Silver Electroplating: Efficiency, Side Reactions and Current Increase
A workshop electroplates steel fittings with silver from a nitrate bath. The fitting is the cathode and a pure silver anode is used.
502 words, about 3 min