Mass Transfer
A coalescer in a mixer-settler liquid-liquid extraction coloumn

Helps in increasing the bubble size entering the settler
Helps in increasing the settling rate of the bubbles
All of these
Comprises of thin bed of substances of extended surface having high porosity

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Mass Transfer
One mole feed of a binary mixture of a given composition is flash vaporised at a fixed P and T. If Raoult's law is obeyed, then changing the feed composition would effect

The product composition as well as the fraction vaporised
The product composition but not the fraction vaporised
Neither the product composition nor the fraction vaporised
The fraction vaporised but not the product composition

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