Mass Transfer
Weeping in a distillation column

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

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Mass Transfer
For absorbing a sparingly soluble gas in a liquid

Mass transfer co-efficient must be kept constant
Liquid side mass transfer co-efficient should be increased
Gas side mass transfer co-efficient should be increased
Liquid side mass transfer co-efficient should be decreased

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