Question: An air stream contains 3 mol % water and flows into a column with calcium chloride pellets.
The pellets absorb 95% of the inlet water and nothing else. The pellet weight before the air
flow is 5.1 kg and after 10 hours the weight was 7.3 kg.
a. Determine the flow rate (molar) of the feed gas air.
b. Determine the water mole fraction of the outlet air gas.
c. The mole fraction of water in the outlet stream after 20 hours is the value calculated
in part b, but then suddenly jumps to a large value. Give possible explanations for
this? If the process is allowed to run a very long time, what water mole fraction do
you expect the outlet stream to have?  Edit