1.

Which of the following is true about rate of mass transfer in gas?

A. N<sub>A</sub> = k<sub>p</sub>(p<sub>ab</sub>-p<sub>ai</sub>)
B. N<sub>A</sub> = k<sub>p</sub>(c<sub>ab</sub>-c<sub>ai</sub>)
C. N<sub>A</sub> = k<sub>c</sub>(p<sub>ab</sub>-p<sub>ai</sub>)
D. N<sub>A</sub> = k<sub>c</sub>(c<sub>ab</sub>-c<sub>ai</sub>)
Answer» B. N<sub>A</sub> = k<sub>p</sub>(c<sub>ab</sub>-c<sub>ai</sub>)


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