A clarifier in a wastewater treatment plant contains wastewater
with a bulk concentration of TCE of 0.010 kmol m-3 . The clarifier
operates at 1.0 atm and a constant temperature of 20 o C. The
overall diameter is 2.0 m and it is enclosed to contain the
(sometimes smelly) gases which are emitted from the wastewater.
Fresh air is blown into this enclosure to remove the gases emitted
from the clarifier and is then sent to an incinerator. The TCE
content in the gas leaving the clarifier is 4.0 mol %. The liquid
film mass transfer coefficient for the clarifier is estimated as
kx=0.200 kmol m-2 s -1 and the gas film mass transfer coefficient
is ky=0.0001 kmol m-2 s -1 . Assuming that this wastewater has the
same molar density and TCE equilibrium relationship as in Question
1, determine the following:

1) Determine the mole fraction xA and molar ratio XA of TCE in
the wastewater