What is diffusion coefficient of liquid?
The diffusion coefficient is a function of the fluid, size of the diffusing molecule (larger molecules diffuse more slowly), temperature, obstruction of diffusion by pore structure in sediments or other materials, and the rate of mixing of water.
What is d0 in diffusion coefficient?
D0 is the maximal diffusion coefficient (at infinite temperature; in m2/s), EA is the activation energy for diffusion (in J/mol), T is the absolute temperature (in K), R ≈ 8.31446 J/(mol⋅K) is the universal gas constant.
How do you calculate the rate of diffusion of a liquid?
Key Equations
- rate of diffusion=amount of gas passing through an areaunit of time.
- rate of effusion of gas Arate of effusion of gas B=√mB√mA=√MB√MA.
What is the diffusion coefficient for sodium?
A λ of 2.11 for sodium means an apparent tissue diffusion coefficient of 23% of the free-diffusion coefficient, which is similar to the values found by Johnson (18) and Harris and Burn (17) from the fast component of the sodium washout curve from skeletal muscle.
What is the effect of product thickness on the diffusion coefficient?
At a given thickness, the measured diffusion coefficient of sample A was higher than those in samples B and C. The effect is more pronounced at high film thickness. This is due to the fact that the average thicknesses of samples A, B, and C were different with sample A having the thickest films.
What are the factors which affect the diffusivity of a component in liquid mixture and in gas mixture?
The diffusivity coefficient is dependent on a number of factors, but the most important are the following: type of gas and porous medium interface. reservoir pressure. reservoir temperature.
What is the diffusion coefficient of NaCl in water?
The diffusion coefficient of Na+ and Cl- ions in water, extracted from relevant data in Table 2, are found to be 1.33 x 10-5 cm2/s and 2.03 x 10-5 cm2/s respectively.
What does a larger diffusion coefficient mean?
The higher the diffusion coefficient, the faster diffusion will be. Therefore, the diffusion coefficients for solids tends to be much lower than the diffusion coefficients for liquids and gases. The diffusion coefficient is an important variable in many equations, including Fick’s First and Second Laws.