Elements, Compounds and Mixtures
Why is Diffusion in a Liquid Slow?
Potassium Manganate
(VII) is dark
purple.
When the solid is dissolved in water,
the purple particles slowly diffuse out into the clear
liquid.
Eventually, the random motion of all
the particles
results in the purple colour being equally
dispersed throughout the water.
Diffusion appears to be slow because the dissolved
particles
of the potassium manganate
(VII) have many collisions with
water
molecules and each
other. This slows their progress.
gcsescience.com Contents The Periodic Table Index Quizzes gcsescience.com
Copyright © 2011 Dr. Colin France. All Rights Reserved.
