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Student set General Chemistry, TESS advanced Chemistry
Article no. 25300-88 | Type: Set
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Principle
Between molecules always appear bond forces (Van der Waals or hydrogen bonds). These binding forces can be "illustrated" by the volume contraction in mixing fluids. By mixing different liquids together, the volumes do not add, there occurs a volume contraction by binding forces between the molecules. This experiment shows this volume contraction by the mixing of water and methylated spirits. The students find out that a mixture of 25 ml water and 25 ml of ethanol does not lead to a total volume of 50 ml. The volume difference can be used as a "proof" for the binding forces between water and ethanol.
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(en) Experiment guide
p7151700e .pdf
File size 0.30 Mb
pdf
(de) Versuchsbeschreibung
p7151700_de .pdf
File size 3.00 Mb
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(es) Versuchsbeschreibung
p7151700_es .pdf
File size 2.93 Mb
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(ru) Versuchsbeschreibung
p7151700_ru .pdf
File size 2.47 Mb
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