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New light from an old reagent: chemiluminescence from the reaction of potassium permanganate with sodium borohydride
journal contribution
posted on 2005-01-01, 00:00 authored by Neil BarnettNeil Barnett, B Hindson, P Jones, Claire Lenehan, R RussellWhen aqueous sodium borohydride (50 mM) is added to a solution of potassium permanganate (1mM, in sodium hexametaphosphate) at acidic pH, bright red-orange emission is easily visible in a darkened room. This chemiluminescence emission is due to an excited state of manganese (II) that undergoes solution phase phosphorescence and provides an excellent opportunity for students to explore the relationship between the initial oxidation state of the manganese and the likelihood of luminescence. Not surprisingly Mn(VII), Mn(IV) and Mn(III) all give rise to chemiluminescence where as Mn(II) fails to react.
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Journal
Australian journal of education in chemistryVolume
65Pagination
29 - 31Publisher
Royal Australian Chemical Institute Inc. Division of Chemical EducationLocation
North Melbourne, VicISSN
1445-9698Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2005, Royal Australian Chemical Institute Inc., Division of Chemical EducationUsage metrics
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