The equation, NA = (DAB . Pt /RTZ . PBM) (PA1 - PA2) is for_______________________?
Correct answer: B. Steady state diffusion for stagnant case
- A. Fick's second law of diffusion
- B. Steady state diffusion for stagnant case
- C. Liquid M.T.C. by Higbie penetration theory
- D. None of these
Explanation
The factor P_t/P_BM is characteristic of diffusion of A through stagnant, non-diffusing B, while the concentration driving force appears as the partial-pressure difference. It therefore represents steady-state equimolar-free diffusion with a stagnant component, not Fick's second law.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Mass Transfer Operations
669 free Mass Transfer Operations MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Mass Transfer Operations questions
Perforated plate towers are unique for solvent extraction because, they provide_____________________?
For the gas absorption, the height of a transfer unit, based on the gas phase is given by (G: superficial molar gas velocity, L: superficial molar liquid velocity, FG: mass transfer co-efficient, moles/m2, a: interfacial area per unit volume of tower) ?
To remove all the moisture from a wet solid it requires exposure to _____________ air?
For the same system, if the same liquid used in an absorber is decreased, the tower height will__________________?
When the gas to be dissolved in liquid is a/an ___________________ then normally co-current adsorber are used?
H2S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H2S has to be reduced from 0.05 to 0.001 mole fraction in the gas side. The height of the tower (in meters) corresponding to an operating line given by, y = 5x + 0.001 is ______________________?