Potassium Permanganate Colour Change (reaction only)
Автор: Periodic Videos
Загружено: 2012-08-19
Просмотров: 254839
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Potassium Permanganate Colour Change - part of our "Berzelius Day" uploading 24 videos in 24 hours. Full video containing this reaction at: • Accidental Reaction - Periodic Table of Vi...
NOTE FROM THE PROFESSOR: The colour change is caused by the purple permanaganate ions [MnO4]- gaining electrons to form colourless Mn(+2) ions. The oxygen from the permanganate and the H2O2 are converted to H2O and O2 (which bubbles off). The extra H atoms come from the sulphuric acid H2SO4. Both the K and Mn end up as sulfates.
See our 24 reactions playlist as it unfolds at: • Reactions Only - Periodic Videos
Berzelius Day explained: • Berzelius Day - Periodic Table of Videos
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From the School of Chemistry at The University of Nottingham: http://www.nottingham.ac.uk/chemistry...
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http://www.bradyharan.com/
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