The individual mass transfer co-efficients (moles/m² . s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling ?

Mass Transfer
The individual mass transfer co-efficients (moles/m² . s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling ?

Gas side

Both liquid and gas side

Liquid side

Interfacial

Gas side

Both liquid and gas side

Liquid side

Interfacial

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Mass Transfer
In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of __________ is zero.

Interface

Gas phase

All of these

Liquid phase

Interface

Gas phase

All of these

Liquid phase

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Mass Transfer
Tower diameter may be decreased by

Using higher reflux ratio

Use of increased tray spacing

Increasing the liquid flow rate

Increasing the vapour flow rate

Using higher reflux ratio

Use of increased tray spacing

Increasing the liquid flow rate

Increasing the vapour flow rate

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Mass Transfer
Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid )

P < P

P >>P

P = P

P

P < P

P >>P

P = P

P

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Mass Transfer
Priming in a distillation column

Is desirable from point efficiency consideration

Reduces the overall pressure drop

Is characterised by the presence of foam throughout the space between trays

Results from very low gas velocity

Is desirable from point efficiency consideration

Reduces the overall pressure drop

Is characterised by the presence of foam throughout the space between trays

Results from very low gas velocity

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Mass Transfer
Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as

K ∝ √D

K ∝ D

K ∝ D1.5

K ∝ D2

K ∝ √D

K ∝ D

K ∝ D1.5

K ∝ D2

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Mass Transfer

Mass Transfer The individual mass transfer co-efficients (moles/m² . s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling ?

Mass Transfer In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of __________ is zero.

Mass Transfer Tower diameter may be decreased by

Mass Transfer Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid )

Mass Transfer Priming in a distillation column

Mass Transfer Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as

Mass Transfer
The individual mass transfer co-efficients (moles/m² . s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling ?

Mass Transfer
In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of __________ is zero.

Mass Transfer
Tower diameter may be decreased by

Mass Transfer
Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid )

Mass Transfer
Priming in a distillation column

Mass Transfer
Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as