Mass Transfer
Solvent used in extractive distillation

Forms a low boiling azeotrope
Does not alter the relative volatility of the original components
Forms a high boiling azeotrope
Is of low volatility

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Mass Transfer
Unsaturated air (with dry bulb temperature and dew point being 35°C and 18°C respectively) is passed through a water spray chamber maintained at 15°C. The air will be cooled

And dehumidified with decrease in wet bulb temperature
And dehumidified with increase in wet bulb temperature
At the same relative humidity
And humidified

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