Chemical Engineering Mcqs

Pure aniline is evaporating through a stagnant air film of 1 mm thickness at 300 K and a total pressure of 100 KPa. The vapor pressure of aniline at 300 K is 0.1 KPa. The total molar concentration under these conditions is 40.1 mole/m3. The diffusivity of aniline in air is 0.74 × 10-5m2/s. The numerical value of mass transfer co-efficient is 7.4 × 10-3. Its units are_______________________?

(A) m/s

(B) cm/s

(C) mole/m2.s.Pa

(D) k.mole/m2.s.Pa

Submitted By :Ali Uppal

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