Resource Book for Sixth Form Practical Chemistry 1 2 3 4 5 6 7 8 9 10 11 12 Titles and Curriculum links Complex formation and solubility product (6.2: solubility product, 10.2b: complex formation) Acidity of copper(II) sulphate(VI) solution and solubility product of copper(II) hydroxide (6.2: concept of acid/base, solubility product) Calcium carbonate in eggshell (6.2: ionic equilibrium----acid-base titration and the choice of indicator) Main Tasks study the solubility of AgBr in the presence of S2O32 ion determine the stability constant, Kst, for [Ag(S2O3)2]3 prepare CuSO4(aq) with different concentrations from stock solution measure pH of CuSO4(aq) of different conc. & calculate Ksp of Cu(OH)2 Synthesis of ferrate(VI) ions (10.2 (a): variable oxidation states, 12.7: redox reactions, 13.3: green chemistry) EDTA titration: calcium in calcium supplements (10.2 (b): complex formation) Synthesis of an iron(III)-EDTA complex (10.2 (b): complex formation) Preparation and relative stability of copper(II) complexes (10.2 (b): complex formation) Synthesis of an azo dye - the coupling reaction of benzenediazonium ion with naphthalen-2-ol (12: chemistry of organic compounds, 12.8: structure determination of organic compound) synthesize FeO42(aq) and examine its environmental applications Isolation of the essential oils from common spices and spectroscopic analysis of their major constituents (12.1: natural sources of organic compounds, 12.8: structure determination of organic compound) Alcohol breath analyzer (12.7: chem of organic compounds----redox reactions) Separation and identification of the major components of common over-the-counter painkilling drugs (13.2: drugs) Green chemistry: an environmental-friendly preparation of 1,6-hexanedioic acid (13.3: green chemistry, 12.8: structure determination of organic compound) extract and determine the essential oil contents in common spices study infra-red and mass spectra for identification of the major constituents of essential oils Department of Chemistry, CUHK determine the percentage of CaCO3 in an eggshell prepare sample solution of calcium supplement tablets titrate with standard EDTA solution synthesize an iron(III)-EDTA complex compare the chemical properties of the complex with free iron(III) ion synthesize tetraaminecopper(II) sulphate(VI) monohydrate investigate the relative stability of some copper(II) complexes carry out a typical organic synthesis carry out melting point determination for product characterization study mass spectrum of 1-(4-hydroxyphenylazo)-2-naphthol prepare a disposable alcohol breathalyzer test the efficiency of the alcohol breathalyzer separate the components of a painkilling tablet identify the components of a painkilling tablet by melting point determination and TLC prepare 1,6-hexanedioic acid (monomer of nylon-6,6) through a “green” pathway study infra-red and mass spectra for functional groups identification and molecular mass determination Science Education Section, EDB http://www.chem.cuhk.edu.hk/ssc.htm Features 1-period task Formats 1-period task sample data provided 3-period task Inquiry-based students design expt. sample detailed lab. report provided 2-period task TAS preparative work 3-period task 3-period task TAS preparative work 3-period task TAS preparative work students design expt. 3-period task TAS preparative work mass spectrum provided sample short lab. report provided two 2-period tasks infra-red and mass spectra provided 2-period task TAS preparative work 3-period task Student Handout - Purposes - Background - Safety - Materials and apparatus available - Experimental procedure - Questions for further thought - Photos - Video clips (web) Teacher Notes - Curriculum link - Pre-lab talk - Time required - Grouping - Remarks - Suggested solutions to questions for further thought - References - Photos - Video clips (web) 3-period task TAS preparative work infra-red and mass spectra provided Subjects Division, HKEAA