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In the experiment introduced here, a mixture of water and methylated spirits made up by students themselves is to be separated into its components. The alcohol contained in the mixture will be distilled and collected in a conical flask. The simple distillation apparatus used here ...
When the model experiment on the distillation of petroleum is conducted using the comprehensive chemistry/biotechnology experiments system, the glass equipment clearly stands out against the dark background of the large-format base plate. The strong contrast between this ...
Aldehydes are not only easily oxidised, they are also capable of addition reactions. In this way, the addition of dried gaseous ammonia to an ethereal solution of acetaldehyde forms 1-amino-ethanol, which precipitates out of the solution as a solid.
If the alcohol content of a wine is determined directly with an
alcohol meter (hydrometer), the resulting alcohol content reading
is approximately 0% by volume. This is due to the composition of
the wine. The effect of the alcohol on the density is cancelled out
by other ...
Carboxylic acids and alcohols can react with esters under
suitable conditions. Water forms as a by-product and, under the
properly selected reaction conditions, it can be continuously
separated by means of a distilling trap (Dean-Stark apparatus). The
progress of the reaction can ...
All gases may be considered, to a first approximation, to obey
the ideal gas equation which relates the pressure p,
volume V, temperature T and amount of
substance n of a gas. The amount of gas n is
expressed as the number of moles and is equal to m /
M where m ...
Gases are condensing when they are cooled and at high
pressure. In this experiment butane is condensed by cooling it
to ca. -15 °C. In the second part of the
experiment butane is condensed by compressing it.
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