Question

when a crystal of potassium permanganate is placed in a beaker its purple colour spreads throughout the water . what does this observations tell us about the nature of potassium permanganate and water

Answer 1

The observation tells us about the diffusion properties of particles of water and potassium permaganate.

Answer 2

The particles of KMnO4 are purple while water particles are colourless. when KMnO4 crystals is put in H2O, KMnO4 particles spreads from one another. Actually on dissolving kMnO4 gets into the spaces of water making it purple