| 1. | Lanthanum is separated as a double salt with ammonium nitrate by crystallization.
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| 2. | Sodium sulfate displays a moderate tendency to form double salts.
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| 3. | Double salts should not be confused with a complex ion remains unchanged.
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| 4. | The sulfuric acid method yields the insoluble double salt directly as caesium alum ( ).
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| 5. | After, the double salt is dissolved liberating calcium nitrite and regenerating the calcium hydroxide.
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| 6. | They form a series of double salts, and include clusters with multiple nickel atoms.
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| 7. | These double salts are coloured dark purple.
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| 8. | This salt is relatively less soluble than other rare earth double salts and therefore stays in the residue.
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| 9. | They are sometimes found in their sodium, potassium, or calcium salts, or even stronger double salts.
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| 10. | After separation, the pure precipitated double salt is decomposed, and pure CsCl is precipitated by evaporating the water.
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