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PrecipitatewithNaOH
The colour precipitate formed when a metal ion reacts with NaOH
| Metal Ion | Colour Precipitate |
|---|---|
| Aluminium (Al3+) | White (dissolve in excess) |
| Calcium (Ca2+) | White (insoluble, use flame test) |
| Magnesium (Mg2+) | White (insoluble, use flame test) |
| Copper (Cu2+) | Blue |
| Iron II (Fe2+) | Green |
| Iron III (Fe3+) | Brown (rust) |