Mass Transfer
In case of a desorber (stripper), the

Operating line always lies above the equilibrium curve
Operating line always lies below the equilibrium curve
Temperature always increases
Temperature remains unaffected

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Mass Transfer
Humid volume is the total volume in m³ of 1 kg of

Vapour laden gas at 1 atm. and room temperature
Vapour laden gas at 1 atm. and gas temperature
Gas plus its accompanying vapour at 1 atm. and room temperature
Gas plus its accompanying vapour at 1 atm. and gas temperature

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