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RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA / SCIENCE PHOTO LIBRARY RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA / SCIENCE PHOTO LIBRARY
Rapid redox reaction. Crystals of potassium permanganate are added to a reaction flask containing hydrogen peroxide solution (35 %). This rapid redox reaction evolves high concentrations of oxygen gas and water vapour which are expelled from the reaction flask at a rapid rate. In this reaction, permanganate ions reduce to manganese ions when they gain electrons from hydrogen peroxide molecules which lose electrons and oxidise forming oxygen gas and protons.
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