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Autocatalysis experiment

Autocatalysis experiment

A500/0175

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Credit

JERRY MASON / SCIENCE PHOTO LIBRARY JERRY MASON / SCIENCE PHOTO LIBRARY

Caption

Autocatalysis. Demonstration of autocatalysis using ethanedioate and manganate(VII) ions. Autocatalysis occurs when reaction products catalyse the reaction itself. In this case, a solution of potassium permanganate (purple) is added to a solution of ethanedioic acid (oxalic acid, colourless). One of the products, the manganese(II) ion, further catalyses the reaction, liberating large quantities of carbon dioxide and carbon monoxide gases.

Release details

Model release not required. Property release not required.

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