Bromine dioxide: Difference between revisions
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{{redirect|BrO2|BrO{{su|b=2|p=−}} |
{{redirect|BrO2|the oxyanion with the formula BrO{{su|b=2|p=−}}|Bromite}} |
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{{chembox |
{{chembox |
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| Verifiedfields = changed |
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| verifiedrevid = 404121039 |
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| Watchedfields = changed |
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| verifiedrevid = 428832706 |
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| Name = Bromine dioxide |
| Name = Bromine dioxide |
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| ImageFile1 = Bromine-dioxide-radical-resonance-hybrid-2D.png |
| ImageFile1 = Bromine-dioxide-radical-resonance-hybrid-2D.png |
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| ImageSize1 = 150px |
| ImageSize1 = 150px |
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| ImageName1 = |
| ImageName1 = |
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| ImageFile2 = Bromine-dioxide-MP2-CM-3D-balls.png |
| ImageFile2 = Bromine-dioxide-MP2-CM-3D-balls.png |
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| ImageSize2 = 150px |
| ImageSize2 = 150px |
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| IUPACName = Bromine dioxide |
| IUPACName = Bromine dioxide |
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| OtherNames = |
| OtherNames = |
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| Section1 = {{Chembox Identifiers |
| Section1 = {{Chembox Identifiers |
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| CASNo_Ref = {{cascite|correct|??}} |
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| CASNo = 21255-83-4 |
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| |
| CASNo = 21255-83-4 |
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| |
| RTECS = |
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| PubChem = 5460629 |
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| ChemSpiderID_Ref = {{chemspidercite|changed|chemspider}} |
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| ChemSpiderID = 4574124 |
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| SMILES = O=Br=O |
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| InChI = 1/BrO2/c2-1-3 |
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| InChIKey = SISAYUDTHCIGLM-UHFFFAOYAZ |
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| StdInChI_Ref = {{stdinchicite|changed|chemspider}} |
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| StdInChI = 1S/BrO2/c2-1-3 |
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| StdInChIKey_Ref = {{stdinchicite|changed|chemspider}} |
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| StdInChIKey = SISAYUDTHCIGLM-UHFFFAOYSA-N |
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}} |
}} |
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| Section2 = {{Chembox Properties |
| Section2 = {{Chembox Properties |
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| MolarMass = 111.903 g/mol<ref name="handin"> |
| MolarMass = 111.903 g/mol<ref name="handin"> |
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{{Citation |
{{Citation |
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| |
| last1 = Perry |
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| |
| first1 = Dale L. |
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| author-link = |
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| last2 = Phillips |
| last2 = Phillips |
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| first2 = Sidney L. |
| first2 = Sidney L. |
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| author2-link = |
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| publication-date = |
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| date = |
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| year = 1995 |
| year = 1995 |
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| title = Handbook of Inorganic Compounds |
| title = Handbook of Inorganic Compounds |
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| edition = |
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| volume = |
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| series = |
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| publication-place = |
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| place = |
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| publisher = CRC Press |
| publisher = CRC Press |
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| |
| isbn = 0-8493-8671-3 |
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| isbn = 0849386713 |
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| doi = |
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| oclc = |
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| pages = 74 |
| pages = 74 |
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| url = |
| url = https://books.google.com/books?id=0fT4wfhF1AsC&q=%22Bromine+dioxide%22&pg=PA74 |
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| |
| access-date = 17 March 2009 |
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}}</ref> |
}}</ref> |
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| Appearance = unstable yellow crystals |
| Appearance = unstable yellow crystals |
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| Density = |
| Density = |
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| Solubility = |
| Solubility = |
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| MeltingPt = decomposes around 0°C |
| MeltingPt = decomposes around 0°C |
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<ref name="hand"> |
<ref name="hand"> |
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| last = Lide |
| last = Lide |
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| first = David R. |
| first = David R. |
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| author-link = |
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| last2 = |
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| first2 = |
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| author2-link = |
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| publication-date = |
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| date = |
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| year = 1998 |
| year = 1998 |
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| title = Handbook of Chemistry and Physics |
| title = Handbook of Chemistry and Physics |
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| edition = 87 |
| edition = 87 |
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| location = Boca Raton, Florida |
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| volume = |
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| series = |
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| publication-place = Boca Raton, FL |
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| place = |
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| publisher = CRC Press |
| publisher = CRC Press |
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| |
| isbn = 0-8493-0594-2 |
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| isbn = 0849305942 |
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| doi = |
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| oclc = |
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| pages = 447 |
| pages = 447 |
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| url = |
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| accessdate = |
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}}</ref> |
}}</ref> |
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| BoilingPt = |
| BoilingPt = |
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}} |
}} |
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| Section3 = {{Chembox Structure |
| Section3 = {{Chembox Structure |
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| MolShape = |
| MolShape = |
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| Coordination = |
| Coordination = |
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| CrystalStruct = |
| CrystalStruct = |
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| Dipole = |
| Dipole = |
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}} |
}} |
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| Section7 = {{Chembox Hazards |
| Section7 = {{Chembox Hazards |
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| NFPA-H = |
| NFPA-H = |
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| NFPA-F = |
| NFPA-F = |
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| NFPA-R = |
| NFPA-R = |
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| |
| FlashPt = |
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| RPhrases = |
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| SPhrases = |
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| FlashPt = |
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}} |
}} |
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| Section8 = {{Chembox Related |
| Section8 = {{Chembox Related |
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| OtherAnions = [[Bromine monoxide]]<br />[[Bromine trifluoride]]<br />[[Bromine pentafluoride]] |
| OtherAnions = [[Bromine monoxide]]<br />[[Bromine trifluoride]]<br />[[Bromine pentafluoride]] |
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| OtherCations = [[Oxygen difluoride]]<br />[[Chlorine dioxide]]<br />[[Iodine dioxide]] |
| OtherCations = [[Oxygen difluoride]]<br />[[Dichlorine monoxide]]<br />[[Chlorine dioxide]]<br />[[Iodine dioxide]] |
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}} |
}} |
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}} |
}} |
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'''Bromine dioxide''' is the [[chemical compound]] composed of [[bromine]] and [[oxygen]] with the [[chemical formula|formula]] BrO<sub>2</sub>. It forms unstable yellow<ref name="hand"/> to yellow-orange<ref name="handin"/> crystals. It was first isolated by R. Schwarz and M. Schmeißer in 1937 and is hypothesized to be important in the [[atmosphere|atmospheric]] reaction of bromine with [[ozone]]<ref name="rot"> |
'''Bromine dioxide''' is the [[chemical compound]] composed of [[bromine]] and [[oxygen]] with the [[chemical formula|formula]] BrO<sub>2</sub>. It forms unstable yellow<ref name="hand"/> to yellow-orange<ref name="handin"/> crystals. It was first isolated by R. Schwarz and M. Schmeißer in 1937 and is hypothesized to be important in the [[atmosphere|atmospheric]] reaction of bromine with [[ozone]].<ref name="rot">{{cite journal|last1=Müller|first1=Holger S. P.|last2=Miller|first2=Charles E.|last3=Cohen|first3=Edward A.|title=The rotational spectrum and molecular properties of bromine dioxide, OBrO|journal=The Journal of Chemical Physics|volume=107|issue=20|year=1997|pages=8292|issn=0021-9606|doi=10.1063/1.475030|bibcode=1997JChPh.107.8292M }}</ref> |
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It is similar to [[chlorine dioxide]], the dioxide of [[Chlorine|its halogen neighbor]] one period higher on the [[periodic table]].{{cn|date=September 2023}} |
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{{Citation |
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| last = Muller |
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| first = Holger S.P. |
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| authorlink = |
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| coauthors = Charles E. Miller, Edward A. Cohen |
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| date = November 22, 1997 | title = Rotational spectrum and molecular properties of bromine dioxide, OBrO |
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| journal = Journal of Chemical Physics |
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| volume = 107 |
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| issue = 20 |
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| series = |
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| pages = 82–92 |
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| publisher = |
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| location = |
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| issn = 00219606 |
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| pmid = |
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| pmc = |
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| doi = 10.1063/1.475030 |
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| bibcode = |
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| oclc = |
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| id = |
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| url = http://link.aip.org.echo.louisville.edu/link/?JCPSA6/107/8292/1 |
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| language = |
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| format = |
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| accessdate = 17 March 2009 |
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| laysummary = |
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| laysource = |
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| laydate = |
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| quote= |
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}}</ref>. It is similar to [[chlorine dioxide]], the dioxide of its halogen neighbor one period higher on the [[periodic table]]. |
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__TOC__ |
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==Reactions== |
==Reactions== |
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Bromine dioxide is formed when an |
Bromine dioxide is formed when an electric current is passed through a mixture of bromine and oxygen gases at low temperature and pressure.<ref name="pblock"> |
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{{Citation |
{{Citation |
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| last =Arora |
| last =Arora |
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| first = M.G. |
| first = M.G. |
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| author-link = |
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| last2 = |
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| first2 = |
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| author2-link = |
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| publication-date = |
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| date = |
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| year = 1997 |
| year = 1997 |
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| title = P-Block Elements |
| title = P-Block Elements |
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| |
| location = New Delhi |
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| volume = |
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| series = |
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| publication-place = New Delhi |
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| place = |
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| publisher = Anmol Publications |
| publisher = Anmol Publications |
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| isbn = 978-81-7488-563-0 |
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| id = |
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| isbn = 9788174885630 |
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| doi = |
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| oclc = |
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| pages = 256 |
| pages = 256 |
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| url = |
| url = https://books.google.com/books?id=QR3TCaKaykEC&q=%22Bromine+dioxide%22&pg=PA256 |
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| |
| access-date = 17 March 2009 |
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}}</ref> |
}}</ref> |
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Bromine dioxide can also be formed by the treatment of bromine gas with ozone in [[trichlorofluoromethane]] at −50 °C<ref name="handin"/> |
Bromine dioxide can also be formed by the treatment of bromine gas with ozone in [[trichlorofluoromethane]] at −50 °C.<ref name="handin"/> |
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When mixed with a [[Base (chemistry)|base]], bromine dioxide gives the [[bromide]] and [[bromate]] [[anion]]s<ref name="pblock"/> |
When mixed with a [[Base (chemistry)|base]], bromine dioxide gives the [[bromide]] and [[bromate]] [[anion]]s:<ref name="pblock"/> |
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:6 BrO<sub>2</sub> + 6 [[sodium hydroxide|NaOH]] → [[sodium bromide|NaBr]] + 5 [[sodium bromate|NaBrO<sub>3</sub>]] + 3 [[water|H<sub>2</sub>O]] |
:6 BrO<sub>2</sub> + 6 [[sodium hydroxide|NaOH]] → [[sodium bromide|NaBr]] + 5 [[sodium bromate|NaBrO<sub>3</sub>]] + 3 [[water|H<sub>2</sub>O]] |
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==References== |
==References== |
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{{reflist}} |
{{reflist}} |
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{{bromine compounds}} |
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{{oxides}} |
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{{oxygen compounds}} |
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{{Use dmy dates|date=March 2018}} |
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{{DEFAULTSORT:Bromine Dioxide}} |
{{DEFAULTSORT:Bromine Dioxide}} |
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[[Category:Bromine compounds]] |
[[Category:Bromine compounds]] |
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[[Category:Oxides]] |
[[Category:Oxides]] |
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[[Category:Substances discovered in the 1930s]] |
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{{inorganic-compound-stub}} |
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[[simple:Bromine dioxide]] |
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