15. Consider a spherical particle A of radius R dissolving in a stagnant liquid B. Oncedissolved, A and B react to form C with an irreversible first-order reaction reaction rateconstant k). The solubility of A in B, CAo, is small and the system can be approximatedas a dilute binary system. The diffusivity of A in B is DAB. The system can be treated asin a pseudo-steady state. Let b2 denote (k,R/DAB). What is the molar flux of A at theparticle surface?
(A)



