(1) Space between the particles of gaseous substance is more than solids and liquids.
(2) In making of soda water, if we pass CO2 into water it diffuses fastly.
(3) When we try to mix two liquids they also diffuses fastly but when compared to gas to liquid, it take more time to diffuse.
(4) If we try to dissolve sugar or salt in water they will take more time to diffuse because the space between particles is very less in solid state substance.
(5) So we can conclude that space between gas to liquid particles is more and take more time to diffuse and space between the two liquids particles is more so, they will diffuse speedly.