Microscale reactions of positive ions with sodium hydroxide

A close-up photograph of three test tubes containing precipitates of blue copper hydroxide, red-orange iron(III) hydroxide and green iron(II) hydroxide

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Try this microscale practical exploring the reactions of various positive ions with sodium hydroxide. Includes kit list and safety instructions.

In this microscale version of an experiment commonly conducted in test tubes, students test the reactions of different positive ions with sodium hydroxide, with products including a range of different coloured precipitates and a gas.

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