Question $1$: An interphase convective mass$-$transfer process involves the transfer of the industrial contaminant, methylene chloride $($species A$),$ between air and water at $20C$ and $2\mathrm{.}20$atm total system pressure. Air is the inert carrier gas, and water is the inert solvent. The equilibrium mole fraction of methylene chloride dissolved in water vs$.$ the mole fraction of methylene chloride in air at $20C$ and $2\mathrm{.}2$atm total pressure is shown below:

At the present operating conditions, the bulk phase mole fraction of methylene chloride is $0\mathrm{.}10$ in the gas phase and $0\mathrm{.}0040$ in the liquid phase. The fluid flow rate associated with each case predicts a gas film mass transfer coefficient, $k_y,$ to be $0\mathrm{.}010$gmo$\frac{l}{m^2}.s$ and a liquid film convective mass transfer coefficient, $k_x,$ to be $0\mathrm{.}125$gmo$\frac{l}{m^2}.s.$ At $20C,$ the density of liquid water is $992\mathrm{.}3k\frac{g}{m^3}.$

a$.$ Is the process $(1)$ a liquid stripping process or $(2)$ a gas absorption process?

b$.$ Determine the Henry's law constant for methylene chloride dissolved in water, according to the definition $p_A=H{c}_A.$

c$.$ Determine the overall coefficient $K_L.$

d$.$ What is the flux of species A across the gas and liquid phases?

e$.$ Determine the interface mole fractions $x_{A,i}$ and $y_{A,i}.$