Talk:Dinitrogen tetroxide
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Article Grading: The following comments were left by the quality and importance raters: (edit ยท refresh) More information needed. Wim van Dorst (Talk) 21:04, 16 May 2007 (UTC) |
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Di nitrogen tetroxide IS listed on the IUPAC site YOU list !
good inorganic IUPAC link: http://www.cofc.edu/~deavorj/101/nomenclature.html
Appearance... Is it really brown? I seem to remember an experiment where 2 NO2 <->N2O4 via a change in pressure or temperature; and the glass vessel being a brown shade when in the NO2 form and clear when in the N2O4 form. It is this constant equilibrium between the two gases that make N2O4 appear brown, when really its the NO2 that is brown. see link http://chem-courses.ucsd.edu/Uglabs/Lecture/Demos//04.html Piyrwq 16:41, 15 August 2005 (UTC)
- I added a note there. R6144 14:54, 26 August 2005 (UTC)
When frozen, N2O4 is a white solid (if pure)but as soon as it begins to melt(-11C) the drak brown NO2 molecule impart a progressive coloration to the liquid and when allowed to stand at room temperature the liquid is almost extremely dark brown (almost black). Those expericence wuth NTO learn to be able to tell the approximate temperture of the cooled liquid just by its colour.
[edit] Please verify the data for NO2 and N2O4
The data for NO2 and N2O4 are not very consistent in literature, probably because they always exist together in equilibrium. Verification of the data is recommended before use. R6144 14:54, 26 August 2005 (UTC)
Isn't it impossible to have accurate data on the individual bp/mp of no2/n2o4 since they are in eqm. anyway?
