| 1. | It is a reagent for the qualitative test for potassium and ammonium ions.
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| 2. | Aniline attacks acetic anhydride followed by deprotonation of the ammonium ion:
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| 3. | This excretion of ammonium ions is an important mechanism of renal acid-base regulation.
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| 4. | The ammonium ions are not involved in the oxidising reactions of this salt.
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| 5. | Ammonium ions also have a toxic effect, especially on fish.
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| 6. | Nearly every metal ion and quaternary ammonium ions can form a salt with flourosulfate.
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| 7. | Azo violet may also be used to test for the presence of ammonium ions.
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| 8. | The Lewis structure for an ammonium ion indicates a positive charge on the nitrogen atom.
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| 9. | In an unusual process, ammonium ions form an amalgam.
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| 10. | The degree to which ammonia forms the ammonium ion depends on the pH of the solution.
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