Diffusion

Question 1

The enrichment of ethyl alcohol in the vapor phase from an aqueous ethyl alcohol solution during rectification is an example of

Answer 1

Equimolal counter diffusion

Question 2

True or Flase. The diffusivity of a component relative to itself has a physical meaning and can be measured.

Answer 2

True

Question 3

The Reynolds analogy is applied when…

Answer 3

The Prandtl number is unity

Question 4

The molar flux of a component A in molecular diffusion is independent of

Answer 4

Mass Transfer Area

Question 5

The molar diffusion flux of A relative to a stationary play e is a combination of phase drift and

Answer 5

Molecular diffusion

Question 6

The Fick’s Law of Diffusion gives the rate of diffusion based on

Answer 6

Concentration driving force

Question 7

Equimolal counter diffusion means that the

Answer 7

Bulk im terms of moles is not moving

Question 8

For a gas phase diffusion, unicompinent diffusion through a gas-liquid interface will likely to occur if

Answer 8

One component is soluble and the other is not

Question 9

For a binary unicompinent diffusion, the concentration profile of the diffusiong component along the diffusion path is

Answer 9

Logarithmic

Question 10

It provides the basis for the quantitave description of the diffusional phenomena of molecules

Answer 10

Kinteic Theory of Gases