Find J flux of A ( xA = 0.5) if the total N flux is 6 mol/sq.m sec and N flux of A is 3 mol/sq.m sec.

Question

Find J flux of A ( xA = 0.5) if the total N flux is 6 mol/sq.m sec and N flux of A is 3 mol/sq.m sec.

← Prev Question Next Question →

1 Answer

Related questions

+1 vote

1 answer

Find the flux of A ( xA= 0.2) if Total flux is 5 mol/sq.m sec and J flux of A is 2 mol/sq.m sec.

asked Sep 21, 2022 in Mass Transfer by Julian (37.1k points)

+1 vote

1 answer

Find the change in concentration for a steady state equimolar counter diffusion if D(AB)= 6 sq.m/sec, the change in distance is 2 m and the N flux of A is 5 mol/sq.m sec.

asked Sep 21, 2022 in Mass Transfer by Julian (37.1k points)

+1 vote

1 answer

Find the diffusivity of AB in sq.m/sec if N flux of A 5 mol/sq.m sec, concentration difference is 2mol/cu.m and distance is 3 m.

asked Sep 21, 2022 in Mass Transfer by Julian (37.1k points)

+1 vote

1 answer

Find the total flux for a particle A and B in a steady state if flux of A and B is 2.44 and 4.44 mol/sq.m sec.

asked Sep 21, 2022 in Mass Transfer by Julian (37.1k points)

+1 vote

1 answer

Find the diffusivity through slab if N flux of A 4 mol/sq.m sec, concentration difference is 2mol/cu.m and distance is 3 m.

asked Sep 21, 2022 in Mass Transfer by Julian (37.1k points)

+1 vote

1 answer

For two particles at steady state collision of A and B, J flux of A is 2 mol/sq.m sec find the J flux of B.

asked Sep 21, 2022 in Mass Transfer by Julian (37.1k points)

+1 vote

1 answer

Find the activated diffusivity of carbon if energy of activation is 6 kJ; the value of constant diffusivity is 2.5 sq.m/sec. (Hint: the value of exponential of (-6/RT) is 2.55)

asked Sep 21, 2022 in Mass Transfer by Julian (37.1k points)

+1 vote

1 answer

For the molecular diffusion of liquids, if the diffusing molecules having criteria of steady state diffusion of B over non diffusing A then the N flux of A is

asked Sep 20, 2022 in Mass Transfer by Julian (37.1k points)

+1 vote

1 answer

For liquid molecular diffusion of A and B, steady state equimolar counter diffusion the N flux of A is negative of N flux of B.

asked Sep 21, 2022 in Mass Transfer by Julian (37.1k points)

+1 vote

1 answer

Find the gas phase mass transfer co-efficient for a unbound moisture to remove if the flux is 5 kg/sq.m sec and the difference in humidity of the liquid and the main stream is 0.5 units.

asked Sep 21, 2022 in Mass Transfer by Julian (37.1k points)

+1 vote

1 answer

Find the partial pressure of A if the total pressure is 2 atm; Concentration of A is 2 mol/cu.m and total concentration is 5 mol/cu.m.

asked Sep 21, 2022 in Mass Transfer by Julian (37.1k points)

+1 vote

1 answer

Oxygen diffuses through a stagnant layer of air, 1mm thick, ambient temperature 28°C and 1atm total pressure. The partial pressure of oxygen on two sides of layer is P1=0.9atm and P2=0.1atm respectively. Calculate the value of Molar flux (in mol/m^2.s) with respect to an observer moving with molar average velocity. Calculate this value at the end of the path where P2=0.1atm. Use R=8.205*10^-5m^3atmK^-1mol^-1.

asked Sep 21, 2022 in Mass Transfer by Julian (37.1k points)

+1 vote

1 answer

In order to prepare Lithium nitride, air is passed gently over a reactor. Suppose that Nitrogen diffuse to a length 5cm before getting reacted with Lithium. Nitrogen reacts with lithium quickly so that partial pressure of Nitrogen at that point is 0. Reactor is a cylinder of length 10cm and diameter 2cm. Assume air to be a mixture of Nitrogen and Oxygen only. The temperature is 298K and total pressure 1atm. Diffusivity of N2 in O2 is 2*10^-5m^2/s. Calculate the Molar flux (mol/m^2.s) of N2 at a distance of 2.5cm from the top with respect to an observer moving with twice the mass average velocity a direction towards the liquid surface. (R=8.205*10^-5m^3atmK^-1mol^-1). Assume z=0 at the top of the reactor.

asked Sep 20, 2022 in Mass Transfer by Julian (37.1k points)

+1 vote

1 answer

Estimate the mole fraction if concentration of A is 2 mol/cu.m and the total concentration is 5 mol/cu.m.

asked Sep 21, 2022 in Mass Transfer by Julian (37.1k points)

+1 vote

1 answer

From the reaction, Methane –> Carbon + 2(Hydrogen molecule) find the ratio of N Flux of A to the Total N flux( A+B); Given N Flux of B =-2 N flux of A.

asked Sep 21, 2022 in Mass Transfer by Julian (37.1k points)

+1 vote

1 answer

If the value of N flux of A to the total N flux is 1 then it is a steady state diffusion of non-diffusing B.

asked Sep 20, 2022 in Mass Transfer by Julian (37.1k points)

+1 vote

1 answer

In an accident a container containing ethanol(s.g 0.789) falls down in a room of dimension 1*1*2(all in m). Ethanol forms a layer of 2mm. Ethanol vaporizes and diffuses through a stagnant film of air of thickness 2.5mm. What will be the time required for the water layer to disappear completely. The diffusivity of ethanol in air is 2.567*10^-5 m^2/s. the total pressure is 1.013 bar and the pressure of ethanol in bulk air is 0.02244 bar and at the ethanol-air interface is 0.02718bar. The temperature is 25.2°C.

asked Sep 21, 2022 in Mass Transfer by Julian (37.1k points)

+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 (37.1k points)

+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 overall mass density

asked Sep 20, 2022 in Mass Transfer by Julian (37.1k points)

+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 (37.1k points)

+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 the average molecular weight of the mixture

asked Sep 20, 2022 in Mass Transfer by Julian (37.1k points)

+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 mass fraction of oxygen

asked Sep 20, 2022 in Mass Transfer by Julian (37.1k points)

+1 vote

1 answer

The value of a ratio of N flux of A to the total N flux for a steady state equimolar counter diffusion is

asked Sep 21, 2022 in Mass Transfer by Julian (37.1k points)

+1 vote

1 answer

Before collision, the distance between the two particles is mean free path.

asked Sep 21, 2022 in Mass Transfer by Julian (37.1k points)

+1 vote

1 answer

Diffusion co-efficient in molecular diffusion is estimated by _________

asked Sep 20, 2022 in Mass Transfer by Julian (37.1k points)

Chris · Answer 1 · 2022-10-12T02:40:27+0000

Correct option is (a) 0

To explain I would say: N flux of A = J flux of A + Total flux N * xA

3= J flux of A + 6 * 0.5

J flux = 0.

Find J flux of A ( xA = 0.5) if the total N flux is 6 mol/sq.m sec and N flux of A is 3 mol/sq.m sec.

Please log in or register to answer this question.

1 Answer

Please log in or register to add a comment.

Related questions

Categories