Question

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 x 10⁻⁵ m²/s.The numerical value of mass transfer co-efficient is 7.4 x 10⁻³. Its units are

a.

m/s

b.

cm/s

c.

mole/m².s.Pa

d.

kmole/m².s.Pa

Answer: (c).mole/m².s.Pa

Interact with the Community - Share Your Thoughts

Uncertain About the Answer? Seek Clarification Here.

Understand the Explanation? Include it Here.

Q. 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...

Similar Questions

Explore Relevant Multiple Choice Questions (MCQs)

Q. If 1.5 moles of oxygen combines with aluminium to form Al₂O₃, then the weight of aluminium (atomic weight = 27 ) used in this reaction is __________ gm.

Q. The unit of dynamic viscosity is

Q. In case of a solution (not of a solid in a liquid), whose total volume is more than the sum of volumes of its components in their pure states, solubility is

Q. Saturated molal absolute humidity of the vapor-gas mixture depends upon the

Q. At a constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with rise of temperature due to

Q. 'Cox' chart which is useful in the design of a distillation column (particularly suitable for petroleum hydrocarbons) is a plot of the

Q. Boiling point of a non-homogeneous mixture of immiscible liquids is __________ that of any one of its separate components.

Q. A vapor whose partial pressure is less than its equilibrium vapor pressure is called a __________ vapor.

Q. Sometimes, in chemical processes, a part of the outlet stream is rejected as waste in order to keep the impurity level in the system within limits. This phenomenon is termed as the

Q. The density of a gas at N.T.P.is 'ρ'. Keeping the pressure constant (i.e. 760 mm Hg), the 3 density of the gas will become 3/4 (0.75ρ)at a temperature of __________ °K

Q. A gas occupies a volume of 283 c.c at 10°C. If it is heated to 20°C at constant pressure, the new volume of the gas will be __________ c.c.

Q. In the reaction, represented by Na₂CO₃ + HCl → NaHO₃ + NaCl, the equivalent weight of Na₂CO₃ is

Q. The number of water molecules present in a drop of water weighing 0.018 gm is 6.023 x __________

Q. The density of a liquid is 1500 kg/m³. Its value in gin/litre will be equal to

Q. The heat of vaporisation __________ with increase in pressure.

Q. Raoult's law is not applicable to the

Q. A compound was found having nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. The formula of the compound is

Q. The atomic heat capacities of all solid elements __________ with decrease in temperature.

Q. Raoult's law states that 'the equilibrium vapor pressure that is exerted by a component in a solution is proportional to the mole fraction of that component'. This generalisation is based on the assumption that the

Q. °API gravity of water at N.T.P. is about

Recommended Subjects

Are you eager to expand your knowledge beyond Basic Chemical Engineering? We've handpicked a range of related categories that you might find intriguing.

Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!