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L A B O R ATO R Y E X P E R I M E N T S C H E M I ST R Y

About Phywe

Founded in Göttingen, Germany in 1913 by Dr. Gotthelf Leimbach, Phywe Systeme GmbH & Co. KG quickly advanced to one of the leading manufacturers of scientific equipment. Over this period of more than 90 years Phywe has been putting quality and innovation into its products as a fundamental requirement. As a well knowninternational supplier in the fields of science and engineering we have made a significant impact on the market through high quality equipment. Phywe products are made in Germany and in use throughout the world in the fields of education and research, from primary schools right through to university level. Up-to-date educational systems, planning and commissioning of scientific and engineeringlaboratories to meet specific requirements are our daily business. As a supplier of complete, fully developed and established systems, Phywe provides teaching and learning systems for students as well as teacher demonstration experiments. The system ranges from simple, easy to operate equipment intended for student use up to coverage of highly sophisticated and specialised university equipment demands.Phywe Systeme GmbH & Co. KG has achieved a very high standard based on research and technology and through exchange of experiences with universities and high schools as well as with professors and teachers. As experienced and competent manufacturer, we would gladly assist you in the selection of the "right" experiments for your particular curricula.

Contents

Contents
What you can learnabout
LEC 01 Kinetic Theory 8 9 10 11 12 13 14 15 16 17 18 19 Page LEC 04 Interfacial Chemistry 56 57 58 59 60 61 62 Page LEC 01.01 Velocity of molecules and the MAXWELL BOLTZMANN distribution function LEC 01.02 Gas viscosity: Estimation of molecular diameter LEC 01.03 Diffusion in gases: the diffusion coefficient of bromine in air LEC 01.04 Determination of molar mass using the ideal gas law LEC01.05 Determination of the molar mass of a liquid LEC 01.06 Determination of the molecular weight of a polymer from intrinsic viscosity measurement LEC 01.07 Thermal conductivity of gases LEC 01.08 Viscosity measurements with the falling ball viscometer LEC 01.09 Viscosity of Newtonian and non-Newtonian liquids (rotary viscometer) LEC 01.11 Gay-Lussac’s law LEC 01.12 Amontons’ law LEC 01.13 Boyle andMariotte’s law LEC 02 LEC 02.01 LEC 02.02 LEC 02.03 LEC 02.04 LEC 02.05 LEC 02.06 LEC 02.07 LEC 02.08 LEC 02.09 LEC 02.10 LEC 02.11 LEC 02.14 LEC 02.15 LEC 02.16 LEC 02.17 LEC 02.18 LEC 03 LEC 03.01 LEC 03.02 LEC 03.04 LEC 03.05 LEC 03.06 LEC 03.07 LEC 03.08 LEC 03.09 LEC 03.10 LEC 03.11 LEC 03.13 LEC 03.14 LEC 03.15 Thermochemistry / Calorimetry Thermal equation of state and critical pointAdiabatic coefficient of gases – Flammersfeld oscillator Heat capacity of gases Determination of the enthalpy of vaporization of liquids Partial molar volumes Determination of the mixing enthalpy of binary fluid mixtures Determination of the hydration enthalpy of an electrolyte Determination of the enthalpy of neutralisation Determination of the melting enthalpy of a pure substance Boiling pointelevation Freezing point depression Determination of the enthalpy of combustion with a calorimetric bomb Determination of the heat of formation for water Determination of the heat of formation for CO2 and CO (Hess law) Determination of the calorific value for heating oil and the gross calorific value for olive oil Dilatometry Chemical Equilibrium 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54
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LEC04.01 Determination of the surface tension of pure liquids with the bubble pressure method LEC 04.02 Determining surface tension using the ring method (Du Nouy method) LEC 04.03 Free films LEC 04.04 Contact angle LEC 04.06 Electrokinetic potential LEC 04.07 Electrophoretic mobility LEC 04.08 Adsorption isotherms LEC 05 Chemical Kinetics

LEC 05.01 Saponification rate of tert-butyl chloride LEC...