Mass Transfer
Which of the following is not fixed by the process requirements, in the design of absorbers?

Flow rate of the entering gas
Terminal concentrations of gas stream
None of these
Composition of the entering liquid

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Mass Transfer
For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because

Solubility of the components of air in water is very small
They are always equal under all circumstances
Water has a high latent heat of evaporation
Lewis number is close to unity

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Mass Transfer
Steam distillation is not recommended to be used, if the

Material can not be distilled by indirect heating even under low pressure, because of the high boiling temperature
Material to be distilled is thermally unstable or has the tendency to react with other components associated with it, at the boiling temperature
Azeotropic mixture is to be separated and the final product is miscible with water
Liquids decompose, if distilled directly at atmospheric pressure

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