$5.$ Reflect on the significance of the overall gas phase mass transfer coefficient $($Kga$).$

a$.$ What's the big picture impact of Kga on the absorption process?

b$.$ How can adjusting the solvent properties tweak Kga?

c$.$ What role does Kga play in the efficiency of the packed column?

$6.$ Contemplate the design implications when the gas film condition controls the rate of absorption$.$

a$.$ Why focus on the gas film condition for column design?

b$.$ How does this focus shift when the liquid film becomes the limiting factor?

c$.$ In what ways does the controlling film influence decisions on solvent selection?

$7.$ Explore the role of the absorption factor in process design.

a$.$ Why should we even bother about the absorption factor?

b$.$ How does this factor streamline the process for higher efficiency?

c$.$ In practical terms, how does it affect the sizing of the absorption column?

$8.$ Delve into the practicalities of estimating the number of ideal stages.

a$.$ How does one approach this estimation, and why is it crucial?

b$.$ What's the impact of inaccuracies in this estimation on the process?

c$.$ How do different methods $($graphical vs$.$ analytical$)$ compare in real$-$world applications?