(Caleulation of the interfacial concertrations)' In a certain equipment used for the absorption of SO, from air by water, at one section, the gas and liquid phase concentrations of the solute are 10 mole% and 4 mass% respectively. The solution density is 61.8 lblff. At the given temperature (40°C) and pressure (10 atm), the distribution of the SO, between air and water can be approximately described as PA = 25x, where p, is the partial pressure of SO, in the gas phase in atm. The individual mass trnsfer coefficients are k, = 10 kmol(1){m°{&x) and k, = 8 kmol{h)(m°XAy). Calculate the overall coefficient, K, in kmol/th )(m*)(Ap, mm Hg) and x; and p at the gas-liquid interface.