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Elements, Compounds and Mixtures
Why is Diffusion in a Liquid Slow?
(VII) is dark
When the solid is dissolved in water,
the purple particles slowly diffuse out into the clear liquid.
Eventually, the random motion of all
results in the purple colour being
equally dispersed throughout the water.
Diffusion appears to be slow because the dissolved
of the potassium manganate (VII) have many collisions
with water molecules and each other. This slows their progress.
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