New light from an old reagent: chemiluminescence from the reaction of potassium permanganate with sodium borohydride
Barnett, Neil, Hindson, Benjamin, Jones, Phill, Lenehan, Claire and Russell, Richard 2005, New light from an old reagent: chemiluminescence from the reaction of potassium permanganate with sodium borohydride, Australian journal of education in chemistry, vol. 65, pp. 29-31.
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Royal Australian Chemical Institute Inc. Division of Chemical Education
Place of publication
North Melbourne, Vic
When 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.
Field of Research
030199 Analytical Chemistry not elsewhere classified 130212 Science, Technology and Engineering Curriculum and Pedagogy
Socio Economic Objective
970103 Expanding Knowledge in the Chemical Sciences
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