Question

why does diffusion become faster on heating ?

Answer 1

As the temperature is increased, the kinetic energy of molecules gets increased. This increases the intermolecular space because of which the matter can diffuse in more easier way into anothers matter.

Answer 2

diffusion  means the spreading of particles to a distance . so on heating diffusion the process become faster because on heating the temperature get increases and this increases the kinetic energy of the particles and this increases the inter molecular space and make diffusion in faster rate