A mixture undergoing multicomponent diffusion is analyzed through the Maxwell-Stefan approach. With regard to this approach which among the following statements are incorrect? The difference in the partial pressure of the Component A over a small distance ∆z (AB)is proportional to

The molar concentration at the two points.

Difference in the velocities at point A and B.

If all the components except 1 of the multicomponent diffusing mixture are inert, then what will be the expression for Diffusivity of the component 1 in the mixture?

D 1m =(N 1 -Y 1 ∑N j )/(∑(Y j N 1 -Y 1 N j )/D ij )

D 1m =(Y 1 ∑N j )/(∑(Y j N 1 -Y 1 N j )/D ij )

D 1m =N 1 /(∑[(Y j N 1 -Y 1 N j )/D ij ])

D 1m =(1-Y 1 )/(∑[Y j /D ij ])

A mixture of 60% hydrogen and 40% oxygen is blowing over a pan of water at 1atm pressure. The bulk gas temperature is 30°c and the water temperature is 20°C. The vapor pressure of water at this temperature is 17.53mm Hg. The concentration of moisture in the bulk gas is negligible and the diffusivity values are D O 2 -H2O=0.357cm2/s,DH2-H2O=0.972cm2/s at 34°C and DH2-O2=0.891cm2/s at 43°C. Q. Which of the following statements are correct?

Water vapor diffuses through non-diffusing hydrogen and oxygen.

Hydrogen and Oxygen is diffusing through water vapor.

Hydrogen is diffusing through water vapor and oxygen.

None of Hydrogen, Oxygen and water vapor is diffusing.

Multicomponent Diffusion Free MCQ Practice Test with Solutions

	Mass Transfer 29 videos\|45 docs\|44 tests

	Mass Transfer 29 videos\|45 docs\|44 tests

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