b$)$ In a wetted wall tower, H$2$S is being absorbed from air into water

at $1\mathrm{.}5$atm total pressure and $298K.$ At a given point in the

column, the mole fraction of H$2$S in the liquid at the gas$-$liquid

interface is $1\mathrm{.}810-5$ and that in the bulk gas is $0\mathrm{.}15.$ Take Henry's

law constant as $0\mathrm{.}00176$ mole fraction per atmosphere. The gas

phase mass transfer coefficient is $,$

Kmo$\frac{l}{m}3).$ Determine the local molar flux of H$2$S$.$