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Mass Transfer

Mass Transfer
Reverse osmosis is also called

Electrodilysis
Dialysis
Ultrafiltration
Diffusion

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Mass Transfer
An alkaline solution is used to reduce the concentration of carbon dioxide in a stream from 10% to 0.1% by absorption with irreversible chemical reaction. The overall number of transfer units based on gas phase is

4.605
100
0.001
9.21

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Mass Transfer
Weeping in a distillation column

Results due to very low gas velocity
Increases tray efficiency
Provides large interfacial surface for mass transfer
Results due to very high gas velocity

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Mass Transfer
Diffusivity in concentrated solutions differs from that in dilute solutions, because of the changes in

Neither A nor B
Both A & B
Degree of ideality of the solution
Viscosity with concentration

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Mass Transfer
Selectivity of the solvent used in solvent extraction should be

< 1
1
> 1

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Mass Transfer
__________ columns are used for liquid dispersion in a continuous gas phase.

Packed
Pulse
Bubble cap
Sieve plate

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