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Principle
Heavy-metal ions may be carried into surface or ground water from mining fields or via the waste water of galvanicor similar production sites. They block the effect of enzymes so that the processes in the metabolism of the organisms that are controlle ...
Strips of indicator paper soaked in potassium nitrate solution are spanned between two copper electrodes inside a ribbed trough. A drop of hydrochloric acid or sodium hydroxide is dripped onto the middle of these strips. When a voltage is applied, it can b ...
If a sub-layer of copper (II) sulphate and potassium hexacyanoferrate (III) is introduced into a solution of ammonium hydroxide and ammonium sulphate in a U-tube with the help of a suspended level bulb (dry vessel) and a DC voltage is applied, it can be se ...
Passing an electric current through a solution can cause chemical reactions. Here the current is the driving force of the redox reactions that occur.If ions are added to water to make it conductive and that water is then electrolysed, hydrogen collects at ...
The electrolysis of molten sodium chloride to obtain chlorine and sodium, which can be further processed to produce sodium hydroxide, is an important industrial-scale process. The experiment depicted here can be used for a simple demonstration of the i ...
PEM (proton exchange membrane) technology refers to the type of fuel cell favoured by car makers and companies that build combined heat and power plants. The demonstration set-up depicted here produces hydrogen using the classic method by reacting hydrochlori ...
PHYWE presents the new x-ray unit: innovative technology, top safety, maximum comfort!
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