Please circle the correct the choice Consider conditions involving a gaseous mix
ID: 1851774 • Letter: P
Question
Please circle the correct the choice Consider conditions involving a gaseous mixture of A and B for which species A is chemically consumed at the catalytic surface. If CA = CA(r, z), we need to treat the system as mass transfer with homogenous chemical reaction. If CA = CA(z), we need to treat the system as mass transfer with heterogenous chemical reaction. A) and B) are true Only A) is true Only B) is true A) and B) are false The reaction rate is known to be first order and the reaction rate per unit area of the surface is K"1CA. If CA is in kmol/m3, the unit of K"1 is. l/S m2/S m/S None of the above To enhance the effective surface, and hence the chemical reaction rate, catalytic surfaces often take the form of porous solids. One such solid may be visualized as consisting of a large number of cylindrical pores, each of diameter D and length L.Explanation / Answer
2.1 b 2.2 a