Principle
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 be seen how the ions migrate along the paper.
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Digital learning
(de) Versuchsbeschreibung
p7152100_de .pdf
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(en) Versuchsbeschreibung
p7152100_en .pdf
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p7152100_es .pdf
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p7152100_fr .pdf
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p7152100_ru .pdf
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() Versuchsbeschreibung
p7152100_ua .pdf
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