| A. Test without prior reaction with aqueous SO2 | ||||
| B. Test with prior reaction with aqueous SO2 | ||||
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Identification using precipitation reactions: Test using silver nitrate |
| Consider if the unknown contains a halogen | ||||
| If you want to proceed to the systematic identification of the halogenes Cl, Br and I, you should return to "Precipitation with silver nitrate" and choose to include the react with aqueous SO2. | ||||
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| Consider if the unknown contains a halogen | ||||
| Do you want to proceed to a systematic identification of the halogenes Cl, Br og I? | ||||
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| Oxidising components is reduced with aqueous sulfur dioxide. Thus the relevant XOn- are all reduced to X-. | ||||
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Silver salts are precipitated from aqueous nitric acid by the halogenides and a few other XOn-, where X is Cl, Br or I, the last as white precipitates. |
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Silver salts are precipitated from aqueous nitric acid by the halogenides . Anions of halogens with higher oxidation numbers than -1 may readily be reduced to halogenides (oxidations number -1). The silver halogenides are formed from acidic solution as the characteristic pricipitates. |
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