Login

Remember

Register

CarrierAdda QnA

Q&A
Hot!
Unanswered
Tags
Users
Ask a Question

Home
Mass Transfer
Figure shows equimolal diffusion between species...

Figure shows equimolal diffusion between species B and C. Identify the correct molar diffusion rate

← Prev Question Next Question →

+1 vote

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

Figure shows equimolal diffusion between species B and C. Identify the correct molar diffusion rate

(a) N b = m c/M b

(b) N b = m b/M b

(c) N c = m b/M b

(d) N c = m b/M c

I had been asked this question in unit test.

The origin of the question is Fick’s Law-1 topic in chapter Modes and Diffusion of Mass Transfer

mass transfer
modes and diffusion
fick’s law-1

Facebook Twitter LinkedIn

Please log in or register to answer this question.

1 Answer

0 votes

answered Oct 11, 2022 by Chris (39.8k points)

Correct option is (b) N b = m b/M b

To elaborate: Equimolal diffusion between species B and C of a binary gas system implies that each molecule of component B is replaced by each molecule of constituent C.

Please log in or register to add a comment.

Related questions

+1 vote

1 answer

Given diagram shows diffusion of water vapor through air. Identify the correct statement

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
concentrations
velocities and fluxes

+1 vote

1 answer

The dimension of diffusion coefficient is given by

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
fick’s law-1

+1 vote

1 answer

For a binary mixture of species A and B, the molar average velocity is defined as

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
concentrations
velocities and fluxes

+1 vote

1 answer

In the expression for molar flux NA=(NA+NB)CA/C – DABdCA/dz, the terms representing bulk flow and molecular diffusion are, respectively

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
fick’s law-2

+1 vote

1 answer

What is the molecular volume of air at normal boiling point?

asked Sep 21, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
fick’s law-1

+1 vote

1 answer

What is the molecular weight of ammonia?

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
fick’s law-1

+1 vote

1 answer

What is the molecular weight of Sulphur-dioxide?

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
fick’s law-1

+1 vote

1 answer

Fick’s law is given by the formula

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
fick’s law-1

+1 vote

1 answer

What is the value of Schmidt number for hydrogen?

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
fick’s law-1

+1 vote

1 answer

Consider loss of ethanol vapor by diffusion from a half-filled open test tube. At what point in the diffusion path will the contribution of the bulk flow term to the molar flux be maximum?

asked Sep 21, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
fick’s law-2

+1 vote

1 answer

In a gas mixture if molecular weights of all the species are equal than which one will be more, Mass average velocity or Molar average velocity?

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
concentration and velocity

+1 vote

1 answer

For a binary mixture of species A and B, the mass average velocity is defined as

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
concentrations
velocities and fluxes

+1 vote

1 answer

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 (m^2/sec) if the diffusion flux is 1.4×10^-8kg/m^2-sec.

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
fick’s law-2

+1 vote

1 answer

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/m^3 and at 3mm the concentration is 0.68kg/m^3. The rate at which the carbon is entering into its surface is 1.27*10-9kg/m^2.s. calculate the value of diffusion coefficient of carbon.

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
fick’s law-2

+1 vote

1 answer

A solution contains 0.3 moles of solute A, 0.2 moles of B and 0.5 moles of C. What will be the mole fraction of A in the mixture?

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
concentration and velocity

+1 vote

1 answer

Under which of the following conditions mass average velocity and molar average velocity are equal?

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
concentration and velocity

+1 vote

1 answer

A binary mixture of oxygen and nitrogen with partial pressures in the ratio 0.21 and 0.79 is contained in a vessel at 300 K. If the total pressure of the mixture is 1 * 10 ^5 N/m^2, find molar concentration of oxygen

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
concentrations
velocities and fluxes

+1 vote

1 answer

A binary mixture of oxygen and nitrogen with partial pressures in the ratio 0.21 and 0.79 is contained in a vessel at 300 K. If the total pressure of the mixture is 1 * 10 ^5 N/m^2, find molar fraction of nitrogen

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
concentrations
velocities and fluxes

+1 vote

1 answer

At which condition molar flux with respect to a stationary observer and with respect to an observer moving with molar average velocity?

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
fick’s law-2

+1 vote

1 answer

What is the value of molar average velocity (m/s) of the mixture?

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
concentration and velocity

+1 vote

1 answer

A molecule in a mixture moves with a velocity of 0.03m/s in (+x) direction. The concentration of the particle is 0.5 mol/liter. A observer is running in (-x) direction with a velocity of 2m/s. calculate the value of molar flux (mol/m2.s) relative to the observer.

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
concentration and velocity

+1 vote

1 answer

A binary liquid mixture is separated by distillation process. The more volatile A vaporizes while less volatile B gets transported in opposite direction. Latent heat of vaporization of A and B is 0.5unit and 1unit respectively. What will be the relation between molar flux of A and B

asked Sep 21, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
diffusion in solids and molecular diffusion in fluids
diffusion in a binary gas mixture

+1 vote

1 answer

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

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
fick’s law-2

+1 vote

1 answer

In which of the following conditions mass transfer will occur spontaneously? C and z is concentration and distance respectively.

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
concentration and velocity

+1 vote

1 answer

The ratio of number of moles of species A to the total number of moles of the mixture is known as

asked Sep 20, 2022 in Mass Transfer by Julian (38.2k points)

mass transfer
modes and diffusion
concentrations
velocities and fluxes

Facebook Twitter LinkedIn

We welcome you to Carrieradda QnA with open heart. Our small community of enthusiastic learners are very helpful and supportive. Here on this platform you can ask questions and receive answers from other members of the community. We also monitor posted questions and answers periodically to maintain the quality and integrity of the platform. Hope you will join our beautiful community

Categories

All categories
Environmental Biotechnology (884)
Environmental Engineering (1.1k)
Enzyme Technology (752)
Farm Machinery (534)
Fermentation Technology (994)
Finite Element Method (480)
Fluid Mechanics (948)
Fluidization Engineering (267)
Food Engineering (984)
Food Packaging Technology (502)
Food Processing Unit Operations (663)
Foundry and Forging (381)
Genetic Engineering (710)
Geotechnical Engineering I (1.2k)
Geotechnical Engineering II (735)
Hazardous Waste Management (880)
Software Architecture (921)
Mass Transfer (499)
Machine Dynamics (772)
Machine Kinematics (912)
Irrigation Engineering (1.2k)
Linear Integrated Circuits (404)
Machine Design (0)
Machine Drawing (0)

Send feedback
About Us
Copyright
Privacy Policy
Terms of Use
Contact Us

Powered by TalkJarvis

...