Task $3$

As a recent graduate with a background in chemical engineering, your role is pivotal in the assessment and

optimization of various processes, including those involving mass transfer. The company has recently introduced

a new process tank that incorporates mass transfer, with potential implications for environmental emissions. In this

specific scenario, air at $25C$ and $1$atm propels across the surface of a tank containing a highly volatile liquid.

There are concerns about the possibility of a substantial release of the volatile liquid into the atmosphere. The tank,

a cylindrical structure with a total height of $6$ meters, is currently filled with the volatile liquid to a level approximately

$0\mathrm{.}5$ meters from the surface at the top. The tank$\text{'}$s surface is exposed to the atmosphere. This volatile liquid is the

diffusing component A$,$ while the non$-$diffusing air is identified as component B$.$ Given the provided information,

your responsibility then entails assessing the scenario and to subsequently obtain the following:

$3\mathrm{.}1$ The molar flux $(\{$:$mo\frac{l}{c}{m}^2-s)$ of the volatile liquid in a tank at the beginning of evaporation process.

$3\mathrm{.}2$ The initial mole$-$fraction profiles in the stagnant air layer and plot them on the same set of axis.

$3\mathrm{.}3$ The bulk$-$flow terms for A and B for this diffusion process, and the molecular$-$diffusion fluxes.

$3\mathrm{.}4$ The time $($hours$)$ for the volatile liquid level in the beaker to drop to $2m.$

Table $1$: The volatile liquid in the tank based on your last digit in your student number: