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| Action of Alkalis on Solution of Salts |
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| Alkalis react with aqueous solutions of salts producing the precipitates of the respective metals as hydroxides. These precipitates are usually colored. From the color and texture of the precipitate, it is possible to identify the metal ions present in the solution. In some cases, the precipitate formed may dissolve in excess of the alkali, to form a solution. |
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| In this last example, the copper hydroxide is of light blue colour. It dissolves in excess of ammonium hydroxide to yield a deep blue solution containing tetrammine copper ions. |
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Action of Alkalis on Substances
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