For a component A of a mixture, concentration as a function of x is gi – McqOptions

MCQOPTIONS

1.	For a component A of a mixture, concentration as a function of x is given:CA=5e-10x (x is in cm and CA in mol/liter)
A.	nCalculate the value of diffusion velocity (m/s)of the component A at the point x=0, if diffusivity of A in the mixture is 2.567*10<sup>-5</sup>m<sup>2</sup>/s.
B.	0.2567
C.	2.567
D.	0.0025
E.	3.541
Answer» B. 0.2567

Discussion

No Comment Found

Related MCQs

In industries titanium is hardened through diffusion of carbon. The concentration of carbon at 1mm into the surface of the titanium slab is 0.25kg/m3 and at 3mm the concentration is 0.68kg/m3. The rate at which the carbon is entering into its surface is 1.27*10-9kg/m2.s. calculate the value of diffusion coefficient of carbon.
The gas A diffuses through non-diffusing B from point 1 to point 2. The total pressure is 2atm and yA1=0.1 and yA2=0.Then the ratio (dPA/dz)1/(dPA/dz)2 is
Which among the following is the statement of the Fick s Law ?
A sheet of Fe 1.0 mm thick is exposed to an oxidizing gas on one side and a deoxidizing gas on the other at 725 C. After reaching steady state, the Fe membrane is exposed to room temperature, and the C concentrations at each side of the membrane are 0.012 and 0.075 wt%. Calculate the diffusion coefficient (m2/sec) if the diffusion flux is 1.4 10-8kg/m2-sec.
For a component A of a mixture, concentration as a function of x is given:CA=5e-10x (x is in cm and CA in mol/liter)
A reaction 3A+2B+C=1.5D+E occurs in a reactor at steady state. What will be the value of the flux ratio NA/NDa)-2
In the expression for molar flux NA=(NA+NB)CA/C DABdCA/dz, the terms representing bulk flow and molecular diffusion are, respectively