Question

Why do solids not diffuse in another solid but gases diffuse in one another rapidly to give

homogeneous mixture? ​

Answer 1

Answer:

Due to their constant, random motion, gas molecules diffuse into areas of lower concentration, and effuse through tiny openings.

Answer 2

$\bf{\huge{\underline{Question}}}$

Why do solids not diffuse in another solid but gases diffuse in one another rapidly to give homogeneous mixture?

$\bf{\huge{\underline{Answer}}}$

Solids do not diffuse with each other because their particles are held tightly and cannot move freely, that is, the interparticle space is minimum.

The spaces between the particles of gases is very large and as a result, they move randomly in all directions at very high speed. Thus, they diffuse in one another rapidly to give homogeneous mixture.