$1.$ What leads to the selection of one solvent over another for an absorption process?

a$.$ Can the volatility of a solvent make a big difference? Why or why not?

b$.$ In what ways does a thicker solvent change things up$?$

c$.$ Why pick a solvent that's choosy about what it absorbs$?$

$2.$ Breaking down the minimum solvent flow ratewhat's the big deal?

a$.$ What happens when you just can't push the solvent flow rate any lower?

b$.$ How does this minimum rate keep the process on track, especially with tricky separations?

$3.$ Let's talk about the Height Equivalent to a Theoretical Plate $($HETP$).$

a$.$ Why does this weirdly named measure matter so much for your column's height?

b$.$ If you had to guess, what would make the HETP go up or down?

c$.$ How does the packing material mess with the HETP?

$4.$ Diving into the design of a packed column, especially its gutsthe packing material.

a$.$ What makes one type of packing star material over another?

b$.$ How does the shape and size of packing material play into efficiency?

c$.$ Have you ever wondered if the material of the packing could change the game? How so$?$