# example of diffusion of gas into solid

3. To simplify the model I halfed the solid and added a diffusion barrier at x=l. This process is called deposition. Hence, diffusion plays a significant role also in the filtration of the blood. Fill a glass with water. The diffusion will happen from both sides, it is not a membrane. Diffusion of gas into liquid - Shaving cream,foams. Heat conduction or transfer also occurs through diffusion. Examples of Gas to Solid (Deposition) Under certain circumstances, gas can transform directly into a solid. Diffusion of gas into solid - Rubber and sponge. Here is an example to understand the diffusion of gases. Now, remove the partition of the container. Heat Conduction. In solids, particularly, diffusion occurs due to thermally-activated random motion of atoms - unless the material is at absolute zero temperature (zero Kelvin), individual atoms keep vibrating and eventually move within the material. We know that this process is known as dissolution of a solid particles into liquid, which takes place due to diffusion of solid particles into the liquid. 5. Diffusion of liquid into solid - Jelly and Butter. The concentration of the gas is constant c=c_0. Diffusion of liquid into gas - Fog and Cloud. This is an example of diffusion of gases into a liquid. Water vapor to ice - Water vapor transforms directly into ice without becoming a liquid, a process that often occurs on windows during the winter months. Diffusion of solid into gas - Smoke and automobile exhaust. Keep two gases A and B at the same pressure in two parts of the container. Diffusion occurs in all states of matter: solid, liquid, and gas. Answer (1 of 3): Diffusion in solids does not happen as in solids the molecules are too tightly packed together to be able to mix with the molecules of another solid. 2. 1. 3 t is time in seconds, x is a location within the host solid, and D is the diffusivity coefficient which can be expanded as follows: =0 , where D o is a pre-exponential constant depending on diffusing atomic species, Q is the activation energy for the diffusion process of interest, R is the universal gas constant, and T is the temperature in Kelvin. 10. The diffusion of a gas in a porous solid is analogous to two other classical problems: the conduction of heat in a two phase medium, one phase being insulating, and the conduction of electricity in a two phase medium one phase of which does not conduct. The benefits of diffusion have been widely harnessed by the food industry, where coloring of edible foods is common in use. However, if the process is inverse (passing from the matter of gaseous to solid) the process is called crystallization or regressive or inverse sublimation . The example of an ice candy is a good one. The molecules of gas A and B are in continuous random motion in its respective compartments. The aquatic plants use the dissolved carbon dioxide for preparing food by photosynthesis and aquatic animals use the dissolved oxygen of water for breathing. 9. 4. The carbon dioxide and oxygen gas present in air diffuse into water, and dissolve in it. Food Coloring. Take a container, separating it into two partitions. It occurs rapidly enough to be observable in a reasonable period of time, however, only in liquids and gases. When an element goes from a solid state to a gaseous state it has the name of direct sublimation . Diffusion can take place in gases, liquids, or solids. Then add 10 drops of ink (any color) to the water very carefully. 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