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why bromine vapours diffuse sun air
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why bromine vapours diffuse sun air
Diffusion is faster in vacuum than in air (for any gas, not just Br2 vapours).
Air is a mixture of several gasses and particles, which when collide with the diffusing gas particles, tend to slow them down. This reduces diffusion rate.
In vacuum, the medium has no particles and diffusion is easier.
It can also be thought of in this way: diffusion takes place due to gradient of particle concentration (nature of particles is immaterial, being a colligative process). This gradient is naturally higher in vacuum, and hence faster diffusion.
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why bromine vapours diffuse sun air
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