Category: Mass Transfer

At equilibrium the concentration of water in vapour phase (C*) in kg/m3 of air space and the amount of water (m) adsorbed per kg of dry silica gel are related by, C* = 0.0667m. To maintain dry conditions in a room of air space 100m3 containing 2.2 kg of water vapour initially, 10 kg of dry silica gel is kept in the room. The fraction of initial water remaining in the air space after a long time (during which the temperature is maintained constant) is_________________?

Mass Transfer 12/03/2023
0

A. 0.0
B. 0.2
C. 0.4
D. 1.0

Pick out the wrong statement?

Mass Transfer 13/02/2023
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A. Change in barometric pressure does not affect the relative humidity
B. In case of a packed tower, the operating velocity is about half of the flooding velocity,
generally
C. ‘Elution’ means the desorption of the adsorbed solute by a solvent
D. The equilibrium moisture content of the solid can be reduced by increasing the absolute
humidity