Ammonium



 

Ammonium is also an old name for the Siwa Oasis in western Egypt.

The ammonium cation is a positively pKa of 9.25. Ammonium and aminium are also general names for positively charged or protonated substituted organic radical groups (which could be symbolized as R).

Chemistry

  

In an ammonium ion, the positively charged pH of the solution.

However, formation of ammonium compounds can also occur in the soluble. The ammonium alkali metal ion.

At attempt of reception of metal ammonium the ion, receiving electron, breaks up to ammonia and hydrogen:

2NH4+ + 2e− = 2NH3 + H2

Ammonium ions may dissolve in amalgam.

Substituted ammonium ions

Any hydrogen in the ammonium ion can be substituted with an alkyl (or other organic radical) group to form a substituted ammonium ion, also called aminium ion; see pH. Only quaternary ammonium cations are permanently charged.

An example of a reaction forming an ammonium ion is that between dimethylamine, (CH3)2NH, with an acid to give the dimethylaminium cation, (CH3)2NH2+:

In biology

Ammonium ions are a toxic waste product of the urea, because it wastes less water to excrete. By water animals it is excreted unchanged in the urine.

See also

References

  1. ^ Pseudo-binary compounds
 
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