Which of the following model holds correct for the two-film theory? (w – McqOptions

MCQOPTIONS

1.	Which of the following model holds correct for the two-film theory? (where KL is the mass transfer coefficient, DAB diffusivity and Zf film thickness)
A.	KL = DAB/Zf
B.	KL = DAB
C.	KL = Zf/DAB
D.	KL = DAB.Zf
Answer» B. KL = DAB

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