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Chemistry · L3 · Identifying Cations with Sodium Hydroxide

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Adding sodium hydroxide solution to a metal-ion solution and reading the precipitate colour to identify the metal.

by @openstemUpdated Chemistry
Add sodium hydroxide solution dropwise to the unknown solutionDoes a precipitate form?Likely a Group 1 ion, e.g. sodium or potassiumPrecipitate colour?Copper(II) ion, Cu2+Iron(II) ion, Fe2+Iron(III) ion, Fe3+Calcium ion, Ca2+No precipitateYesBlueGreenOrange-brownWhite

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