Data Logger Data Logger Data Analysis Rate Laws Equation Experiments Lecture Demos Experiments Demos	Demonstration Experiments & Labs - Chemistry Visualized -
	Didactics of Chemistry          Multimedia              German Version
	Peter Keusch, Acad. Director ret Institut für Organische Chemie Universität Regensburg Universitätsstr. 31 D - 93053 Regensburg E-mail: peter.keusch@chemie.uni-regensburg.de Reverse Links, Comments, Corrections, Suggestions Computer-Interfaced Experiments The Use of Cassy and Chembox System for Data Logging and Data Analysis Select ---------------------------------------------------------------- Kinetics: Reaction Rate, Rate Constant, Reaction Order Activation Parameters (Activation Energy etc.) Conductivity Measurements: + Hydrolysis of Methyl Formate - First-Order Reaction + Alkaline Hydrolysis of Esters - A Comparison of Esters - Second-Order Reaction + Alkaline Hydrolysis of Ethyl Acetate - Second-Order Reaction + Hydrolysis of Tertiary Butyl Chloride - First-Order Reaction + Hydrolysis of Tertiary Butyl Halides - First-Order Reaction + Hydrolysis of Benzoyl Chloride - First-Order Reaction Effect of Nucleofuge Group and Solvent on Rate + Enzymatic Hydrolysis of Urea - Determination of Michaelis Constant, Maximal Velocity, Inhibition by Thiourea Absorption Measurement: + Fading of Phenolphthalein in Alkaline Solution - Test for a Pseudo-First-Order Behaviour + Fading of Triphenylmethane Dyes - Pseudo-First-Order Reaction + Acid catalyzed Iodination of Acetone - Pseudo-Zero Reaction + Acid catalyzed Iodination of Acetone - Pseudo-Zero-Order Reaction + Bromination of reactive Aromatics - Pseudo-First-Order Reaction + Reaction of Methyl Orange with Tin(II) Chloride - Pseudo-First-Order Reaction Volumes Measurement: + Catalyzed Decomposition of Hydrogen Peroxide - First-Order Reaction + Enzymatic Decomposition of Hydrogen Peroxide - First-Order Reaction Temperature Measurement: + Addition of Bisulfite to Ketones + Decomposition of Hydrogen Peroxide catalyzed by Iodide + Decomposition of Hydrogen Peroxide with Dichromate ---------------------------------------------------------------- Electrochemistry Voltage Measurement: + Lead-acid Battery - Charging and Discharging, Determination of the Capacity and the Battery Efficiency + Edison Cell - Charging and Discharging, Determination of the Cell Capacity + Leclanché Cell - Dependence of Discharge Time on the Discharge Current Strength -------------------------------------------- Radioaktivity + Decay of Protactinium-234m - Determination of Half-life -------------------------------------------- Titrations + Redox Titrations - Cerimetry, Manganometry, Dichromatometry + Titration of Fumaric and Maleic Acid -------------------------------------------- Dyes Absorption Measurement: + Light Absorbance of Cyanidin + Light Absorbance of Triphenylmethanes + Absorption maxima of Triphenylmethane Dyes + Positive Solvatochromism + Negative Solvatochromism Organic Chemistry Microscale Projection Experiments - Chemistry en miniature Select ---------------------------------------------------------------- Addition Reactions: + Hydroxylation of Propene + (4+2)-Cycloadditions (Diels-Alder) ---------------------------------------------------------------- Elimination Reactions: + Dehalogenation of 1,2-Dibromopropane + Debromination of 2,3-Dibromosuccinic Acid ---------------------------------------------------------------- Substitution Reactions: + Hydrolysis of Butylbromide Isomers + Hydrolysis of Tertiary Butyl Halides + Nitration of Aromatics (Benzene, Phenol, 2-Naphthol) + Reactivity of Oxalic acid diethylester and Ethyl acetate + Reactivity of Ethyl benzoate, Ethyl 4-nitrobenzoate and Methyl 4-methoxybenzoate ---------------------------------------------------------------- Keto-Enol Tautomerism: + Keto-Enol Tautomerism of Ethyl acetoacetate ---------------------------------------------------------------- Redox Reactions: + Oxidation of Butanol Isomers + Reduction of p-Benzoquinone by Iodide + Oxidation of Hydroquinone by Ag Ions + Formation of Quinhydrone by Reaction of Hydroquinone with Benzoquinone + Oxidation of Hydroquinone by Bromate + Reduction of p-Benzoquinone by Disulfite ---------------------------------------------------------------- Radicals and Radical-Ions: + Goldschmidt-Radical + Reduction of Viologen Dication + Wurster's Blue - Oxidation of N,N,N',N'-Tetramethyl-p-phenylendiamine + Oxidation of 1,3,5-Triphenylverdazyl to Verdazylium Ion ---------------------------------------------------------------- Dyes: + Basic and acid Azo Dyes - Diazotation of Sulfanilic acid, Reaction of Diazonium-Ion with Phenol, 1-Naphthol and 2-Naphthol + Azo-Dyes - Diazotation of m-Nitroaniline and 1-Naphtylamine and Coupling of Diazonium Ion with 2-Naphtol + Effect of Auxochromes on the Light Absorbance of Triphenylmethylium Salts + Crystal violet - a pH Indicator + Anthocyanins as pH Indicators and Complexing Agents + Positive Solvatochromism - Application of 4,4'-Bis-dimethylamino-fuchson to the Determination of Solvent Polarities + Negative Solvatochromism - Application of Betaines to the Determination of Solvent Polarities ---------------------------------------------------------------- Tests for different Organic Compounds: + Test for Aldehydes + Test for Starch in Food-stuffs + Test for Sugars with Molisch Test + Test for Deoxyribose in DNA + Test for Ribose in RNA + Test for Vitamin A in Cod-liver-oil + Test for Vitamin C in Lemonade Last modification: December 2009