identification of cations using ammonium hydroxide
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Aluminium, zinc and lead(II) ions give white precipitate with a few drops of aqueous ammonia. If the precipitate dissolves in excess to form a colourless solution, then zinc ion is present. If the precipitate remains insoluble in excess aqueous ammonia, aluminium ion or lead(II) ions could be present.
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Aluminium, zinc and lead(II) ions give white precipitate with a few drops of aqueous ammonia. If the precipitate dissolves in excess to form a colourless solution, then zinc ion is present. If the precipitate remains insoluble in excess aqueous ammonia, aluminium ion or lead(II) ions could be present.
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