| Ammonium Hydroxide |
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Ammonium hydroxide is a name sometimes given to an aqueous solution of Ammonia . Ammonia has the ability to dissociate in water, and hence Ammonium and Hydroxide ions will be present in an aqueous solution of ammonia according to the following Equilibrium : :NH3 + H2O NH4+ + OH- With a base ionization constant (''K''b) of 1.8×10-5, in a 1M Ammonia solution about 0.48% of the ammonia will be protonated to Ammonium ions (equivalent to a pH of 9.4). Aqueous ammonium hydroxide can also dissolve various metal oxides and hydroxides, such as copper(II) hydroxide to form ammine complexes. Solutions of ammonium hydroxide can also dissolve reactive metals such as aluminum and zinc, with the liberation of hydrogen gas. When ammonium hydroxide is mixed with dilute Hydrogen Peroxide in the presence of a metal ion, such as Cu2+, the peroxide will undergo rapid decomposition. When ammonium hydroxide is mixed in a certain way with iodine crystals it reacts into a paste which when dry is a good explosive. SEE ALSO |
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