UEE Chemistry case studies
UEE Chemistry · Put your knowledge to work in context.
UEE Chemistry is a subject test used in university entrance decisions for candidates heading into chemistry, medicine, pharmacy, engineering and related fields. It is a multiple-choice paper that samples a broad undergraduate-entry syllabus rather than a single textbook chapter, so it rewards steady coverage over last-minute cramming. The UEE Chemistry case studies are 5 cases and about 3,451 words.
1Reading an Element from Its Successive Ionization Energies
An unknown solid element X is under investigation in a laboratory. Its successive ionization energies, in kJ mol⁻¹, are: IE₁ = 578, IE₂ = 1817, IE₃ = 2745, IE₄ = 11 575, IE₅ = 14 830, IE₆ = 18 376.
651 words, about 3 min2Carbonate Purity by Gas Collection over Water
A technician assays a 0.400 g sample of impure calcium carbonate (the impurities are insoluble and do not react with acid) by adding 25.0 mL of 3.00 M hydrochloric acid, which is in excess. The CO₂ evolved is collected in a graduated eudiometer over water.
683 words, about 3 min3Designing a pH 7.50 Buffer for a Zinc-Dependent Enzyme
A biochemistry group needs 500.0 mL of a 0.100 M buffer at pH 7.50 for an assay. The enzyme being studied requires a tightly bound Zn²⁺ ion as a cofactor, and the assay must run for 90 minutes at 25 °C.
690 words, about 3 min4Plating a Steel Fitting from a Mixed Copper–Nickel Bath
A workshop plates a steel (iron) fitting in a bath that is 0.80 M in NiSO₄ and 0.020 M in CuSO₄, held at pH 3.0 and 25 °C. The bath volume is 250 mL and is used once.
717 words, about 4 min5Identifying a Bromoalkane from Elemental, Mass and NMR Data
A student brominates an alcohol and distils the product, a colourless liquid, b.p. Elemental analysis gives C 29.2 %, H 5.7 %, Br 65.0 % (by difference).
710 words, about 4 min