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You are provided with 2 salts L and M. Investigate and identify the salts from the following tests.
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Inorganic Observation Exercise - I Candidate: Lara Jane Dudley Candidate No: 5007 You are provided with 2 salts L and M. Investigate and identify the salts from the following tests. Qualitative Investigation Introduction You are provided with 2 salts L and M. Investigate and identify the salts from the following tests. 1. Observe the appearance of the two salts. OBSERVATION INFERENCE Both salts are coloured. Coloured salts suggest that a transition metal ion may be present. L : Pale lime-green crystalline solid The following transition metal ions could be present because of their characteristic colour: • Cr3+ - green • Fe2+ - pale green • Ni2+ - green Iron (II) halides are known to be pale-coloured solids and FeCl2 is pale yellow. Therefore, this compound is unlikely to be FeCl2, but could be another iron (II) halide. M: Purple crystalline solid The purple colour is suggestive of MnO4- being present. Its most common salt is KmnO4. However, Mn2+ and Co2+(aq) ions also have a characteristic pink colour. Anhydrous cobalt (II) chloride is...
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