Calculation of mass transfer co-efficient is mostly/normally done using ______________ theory?
Correct answer: B. Film
- A. Surface renewal
- B. Film
- C. Penetration
- D. None of these
Explanation
The film theory is the usual engineering basis for estimating mass-transfer coefficients by assuming a thin stagnant film controls resistance near the interface. Surface-renewal and penetration theories are alternative models used when surface turbulence or unsteady contact is important.
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