Ammonium sulfide: Difference between revisions
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'''Ammonium sulfide''', also known as '''diammonium sulfide''', is a hypothetical salt with the formula [NH<sub>4</sub>]<sub>2</sub>S. Aqueous solutions purporting to contain this salt are commercially available. With a p''K''<sub>a</sub> exceeding 15,<ref>Meyer B, Ward K, Koshlap K, Peter L "Second dissociation constant of hydrogen sulfide" Inorganic Chemistry, (1983). volume 22, pp. 2345.{{DOI|10.1021/ic00158a027}}</ref> the [[hydrosulfide]] ion cannot be deprotonated by [[ammonia]]. Thus such solutions consist of a mixture of ammonia and [[ammonium hydrosulfide | [NH<sub>4</sub>]SH]]. | '''Ammonium sulfide''', also known as '''diammonium sulfide''', is a hypothetical salt with the formula [NH<sub>4</sub>]<sub>2</sub>S. Aqueous solutions purporting to contain this salt are commercially available. With a p''K''<sub>a</sub> exceeding 15,<ref>Meyer B, Ward K, Koshlap K, Peter L "Second dissociation constant of hydrogen sulfide" Inorganic Chemistry, (1983). volume 22, pp. 2345.{{DOI|10.1021/ic00158a027}}</ref> the [[hydrosulfide]] ion cannot be deprotonated by [[ammonia]]. Thus such solutions consist of a mixture of ammonia and [[ammonium hydrosulfide | [NH<sub>4</sub>]SH]]. | ||
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Latest revision as of 22:05, 8 August 2012
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Ammonium sulfide, also known as diammonium sulfide, is a hypothetical salt with the formula [NH4]2S. Aqueous solutions purporting to contain this salt are commercially available. With a pKa exceeding 15,[1] the hydrosulfide ion cannot be deprotonated by ammonia. Thus such solutions consist of a mixture of ammonia and [NH4]SH.
Safety
Solutions of "ammonium sulfide" are hazardous as labile sources of toxic hydrogen sulfide.[2]
References
- ↑ Meyer B, Ward K, Koshlap K, Peter L "Second dissociation constant of hydrogen sulfide" Inorganic Chemistry, (1983). volume 22, pp. 2345.doi:10.1021/ic00158a027
- ↑ J.T. Baker: MSDS for Ammonium Sulfide