Test confirming the migration of ions by means of indicatorpaper

Article no. P7402400 | Type: Experiments

grades 7-10 , grades 10-13

10 Minutes

10 Minutes

easy

Pupils

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.

Device name

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Test confirming the migration of ions by means of indicatorpaper

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