Potassium permanganate dissolving, 3 of 3

Potassium permanganate dissolving, 3 of 3

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Credit: MARTYN F. CHILLMAID/SCIENCE PHOTO LIBRARY

Caption: Dissolving potassium permanganate (Third of 3 images). Potassium permanganate solution in a test tube. Potassium permanganate was added as a solid about a day ago and is now fully dissolved. Dissolving occurs because there is electrostatic attraction between the water molecules and those of the solid. The water pulls ions away from the surface of the solid and into the fluid. In this way the potassium permanganate (the solute) slowly dissolves into the water (the solvent) to form a homogeneous mixture (solution, purple). The amount of solute that water can hold in solution depends upon its temperature and pressure. (See also A350/110 and A350/111).

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Keywords: dissolution, dissolve, effects, liquid, physical effect, physics, potassium, potassium permanganate, solution, water

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