A small amount of liquid bromine is added to a container which is then sealed.
Br2(l) → Br2(g)
Use the ideas of the Kinetic Theory to explain why, after about an hour, the bromine molecules have spread uniformly to occupy the whole container.
The diagrams below show simple experiments on the speed of diffusion of gases.
Complete the following explanations. Diagram 1 has been done for you.
Diagram 1
There is air inside and outside the porous pot so the rate of diffusion of air into the pot is the same as the rate of diffusion of air out of the pot. The pressure inside and outside the pot is the same so the coloured liquid is at the same level on each side of the tube.
Diagram 2.
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Diagram 3
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