Microscale Chemistry Experimentation for Teachers
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Esterification of ethanol by acetic acid
Left: During a workshop a student
of Augustinerschule
Friedberg demonstrates how ester can be isolated on a microscale.
Photo 2: A mixture of 2 ml alcohol,
1 ml ethanoic acid and 1 ml conc. sulfuric acid are heated in a 25-ml vial
closed by a stopper with a tubing leading to a test tube cooled in water.
Photo 3: A liquid which was collected
in the cooled test tube.
Right photo: Ester floating on
water. (The liquid in 3 was mixed with drops of universal indicator solution
and a tripple volume of water before shaking).
Commercial and bead
models of ethanal molecules
Oxidation of ethanol by acidified dichromate