A porous cylinder, 2.5 cm in diameter and 3 cm long is saturated with 60 wt% alcohol.
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Question:
a)
Determine the concentration of alcohol (wt%) at the center of the cylinder after 10 hr if the diffusion occurs radially.
b)
Calculate the concentration of alcohol (wt%) at the center of the cylinder after 10 hr if the diffusion occurs radially and axially?
с)
How long (hr) will it take for the concentration at the midpoint to reach 50% of its initial concentration? Consider radial diffusion only.
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