Explanation:
Transfer of mass A into stagnant film B depends on the availability of driving force.
Whereas driving force is the pressure difference at the surface of A and the bulk.
As, [tex]N_{A} \propto (P_{A1} - P_{A2})[/tex]
[tex]N_{A} = K_{G} \times (P_{A1} - P_{A2})[/tex]
Therefore, putting the given values into the above formula as follows.
[tex]N_{A} = K_{G} \times (P_{A1} - P_{A2})[/tex]
= [tex]0.88 \times (0.2 atm - 0.05 atm)[/tex]
= 0.132 [tex]mol/h.ft^{2}[/tex]
Thus, we can conclude that the flux of A from a surface into a mixture of A and B is 0.132 [tex]mol/h.ft^{2}[/tex]
