Lesson 2

Question 1

what are the three types of diffusion in gases?

Answer 1

1. diffusion with convection
2. equimolar counterdiffusion
3. unicomponent diffusion

Question 2

this correlation uses the sum of structural volume increments of each molecule

Answer 2

fuller-schettler-giddings correlation

Question 3

this type of diffusion happens when there is a convective flow of the entire phase of the mixture where the diffusion occurs

Answer 3

diffusion with convection

Question 4

it is the transport due to gradients in concentration

Answer 4

diffusion

Question 5

type of diffusion where the mass transfer rates of the rwo components are equal and opposite

Answer 5

equimolar counterdiffusion

Question 6

type of diffusion where the total pressure is constant, the net moles of A diffusing to the right must be equal to the net moles to the left

Answer 6

equimolar counterdiffusion

Question 7

two types of equations used in equimolar countterdiffusion

Answer 7

1. for ideal gas mixtures in terms of partial P
2. for ideal gas mixtures in terms of mole fraction

Question 8

the concentration profile across the diffusion path of this type of diffusion is linear

Answer 8

equimolar counterdiffusion

Question 9

type of diffusion where one component cannot diffuse to another component

Answer 9

unicomponent diffusion

Question 10

the concentration profile across the diffuion path of this type of diffusion is logarithmic or exponential

Answer 10

unicomponent diffusion

Question 11

what is the concentration profile across the diffusion path in unicomponent diffusion?

Answer 11

logarithmic or exponential

Question 12

what is the concentration profile across the diffusion path in equimolar counterdiffusion

Answer 12

linear