a large crystal of potassium manganate (VII) was placed in the bottom of a beaker of cold water and left for several hours name the two processes that took place during the experiment.
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After several hours, the colour of the solution may change to a purple shade that is lighter than the initial colour. 3. This is because the solution of water and KMnO₄ is made up of very tiny particles which get dispersed and spread amongst themselves.
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