Question 70 - According to Adolf Eugen Fick (1829

Question 70 - According to Adolf Eugen Fick (1829 - 1901) : rate of diffusion v increases with less wall thickness t, increased area A and decreased molecular weight of a fluid M. The diffusion constant D decreased with increasing M.

(a) By assuming v, t, dP, A, M and D changes proportionally of each other, find the equation of v as a function of t, dP, A and D.

(b) The ratio of self diffusion constant D, at T = 273 K and P = 0.1 MPa, for gases B and C are 1.604 : 0.155. If only 2 gases exist in such a system : hydrogen and nitrogen, find the type of gas for B and C with reference to their molecular weights M.

(c) By using the equation of kinetic energy 0.5 MV = constant where V = square of v, find the ratio of V for B and V for C, or V(B) / V(C), as a function of M(B) and M(C), where M(B) is molecular weight of B and M(C) the molecular weight of C : Graham's Law of Diffusion.

Question Posted / kang chuen tat (malaysia - pen

1 Answers
1695 Views
I also Faced
E-Mail Answers

Question 70 - According to Adolf Eugen Fick (1829 - 1901) : rate of diffusion v increases with less ..

Answer / kang chuen tat (malaysia - pen

Answer 70 -
(a) v = (dP) AD / t.

(b) Hydrogen has least M among all gases - general knowledge - highest D. Then B = hydrogen and C = nitrogen.

(c) Let 0.5 M(B) V(B) = 0.5 M(C) V(C), then V(B) / V(C) = M(C) / M(B).

The answer is given by Kang Chuen Tat; PO Box 6263, Dandenong, Victoria VIC 3175, Australia; SMS 61405421706; chuentat@hotmail.com; http://kangchuentat.wordpress.com.

Is This Answer Correct ?

0 Yes

0 No

Post New Answer

More Chemical Engineering Interview Questions

How can you keep our seawater used for heat rejection clean before entering our heat exchangers?

0 Answers

Difference between Synthetic foaming agents V/S Protien based foaming agent?

0 Answers

What are the advantages of using gear pumps?

0 Answers

Any books are availble to read for industrial promotional officers exam.. Syllabus : PAPER-2 : Subject (Diploma Standard) Applied Science, Engineering and Management 1. MATHEMATICS 2. PHYSICS 3. CHEMISTRY 4. INDUSTRIAL MANAGEMENT 5. INDUSTRIAL ENGINEERING 6. COMPUTER APPLICATIONS & BASICS OF DOS, WINDOWS, UNIX, DB MANAGEMENT, DTP, CONCEPTS OF E-GOVERNANCE INCLUDING E-MAIL, E-COMMERCE, INTERNET, COMPUTER VIRUSES.

3 Answers APPSC,

Calculate the cooling duty, H required to condense and cool acetone from 100 degree Celsius to 25 degree Celsius at atmospheric pressure. The heat of vaporization for acetone at its normal boiling point is 30.2 kJ / mol. The boiling point of acetone at atmospheric pressure is 56 degree Celsius. The flowrate of acetone through the condenser is 100 mol / s = N. Value of sensible heat needed to increase the temperature of acetone in liquid form from 25 to 56 degree Celsius is 4.06 kJ / mol. Value of sensible heat needed to increase the temperature of acetone in vapor form from 56 to 100 degree Celsius is 3.82 kJ / mol. Unit of H is kJ / s.

1 Answers

How much maximum power can be generated by 320v, 10kg-cm synchronous motor if shaft is rotated mechanically at 50 to 60 rpm?

0 Answers

significance of fouling factor in shell and tube heat exchnager

1 Answers

What is formula for petrol?

3 Answers Reddy Labs,

How much water is lost through a commercial cooling tower system with a throughput of about 600 gpm?

0 Answers

What are the some common problems associated with dense phase pneumatic conveying?

0 Answers

How much waterproofing compound in one Sqm Plastering (thick.12mm)

0 Answers Ess Pee Construction,

MASS TRANSFER - EXAMPLE 4.1 : A concentric, counter-current heat exchanger is used to cool lubricating oil. Water is used as the coolant. The mass flow rate of oil into the heat exchanger is 0.1 kg / s = FO. For oil, the inlet temperature TIO = 100 degree Celsius and the outlet temperature TOO = 55 degree Celsius. For water, the inlet temperature TIW = 35 degree Celsius and the outlet temperature TOW = 42 degree Celsius. What is the mass flow rate of water in kg / s, FW needed to maintain these operating conditions? Constant for heat capacity of oil is CO = 2131 J /(kg K) and for water is CW = 4178 J /(kg K). Use the equation (FO)(CO)(TIO ?TOO) = (FW)(CW)(TOW ?TIW).

1 Answers

For more Chemical Engineering Interview Questions Click Here