1. The following reaction is performed isothermally at 310 K in a PBR without a pressure drop. CBS Kreq B(g) -'As=kr CAS The rate of the reaction is on the surface of the catalyst particles, which is given above, is equal to the molar flux of A to the surface. Calculate the concentrations of A and B on the surface of the catalyst when the conversion of A in the bulk solution is 0.4. Assume that the mass transfer coefficient, ke, is the same for species A and B. (25) A(g) = solid catalyst Additional information: k',(310K) = 0.15 cm/g cates, Kreq(310 K) = 3, ke = 4 x 10 cm/s, CAO = 1 mol/dm, Catalyst surface area/ mass of catalyst bed = 100 cm/g cat