A gas–liquid convective mass-transfer process involves the transfer of the industrial contaminant methylene chloride (solute A) between air and water at 20°C and 2.20 atm total system pressure. Air is the inert carrier gas, and water is the inert solvent. At the present conditions of operation, the bulk phase mole fraction of methylene chloride is 0.10 in the gas phase and 0.0040 in the liquid phase. The fluid flow associated with each phase is such that the gas film convective mass-transfer coefficient (k_y) is 0.010 gmole/m² · s, and the liquid film convective mass-transfer coefficient (k_x) is 0.125 gmole/m² · s. At 20°C, density of liquid water is 992.3 kg/m³. The equilibrium distribution of methylene chloride dissolved in water is a linear function of the methylene chloride mole fraction in the air over the solution. At 20°C and 2.20 atm total system pressure, m = 50.0, based on the definition y_A,i = m x_A,i. 

a. Plot out the equilibrium line and the operating point in mole fraction coordinates (y_A - x_A). Is the process gas absorption or liquid stripping?
b. What is the Henry’s law constant for methylene chloride dissolved in water, according to the definition p^*_A = H c_AL? Comment on the relative solubility of methylene chloride in water.
c. What are K_x and K_L?
d. What is the flux N_A across the gas and liquid phases?
e. What are the interface mole fractions x_A,i and y_A,i.?