Potassium Permanganate Colour Change - part of our "Berzelius Day" uploading 24 videos in 24 hours. Full video containing this reaction at: http://www.youtube.com/watch?v=OLUyeCC-2Ko
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: http://www.youtube.com/playlist?list=PL6E4F35510525FFF7
Berzelius Day explained: http://www.youtube.com/watch?v=wDXUDq2KLM4
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From the School of Chemistry at The University of Nottingham: http://www.nottingham.ac.uk/chemistry/index.aspx
Periodic Videos films are by video journalist Brady Haran
Tagged under: potassium permanganate,chemical reaction,chemistry
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