Chemical processes which incorporate diffusion usually involve chemical reactions. Often diffusion and reaction occur in the same region, and the two rate phenomena are coupled so closely that they have to be treated simultaneously. Mass transfer with chemical reaction is, indeed, an example of a topic which does not fall entirely within the province of either a chemist or the conventional engineer, because it requires simultaneous consideration of molecular diffusion, fluid mechanics and chemical reaction kinetics, thus becoming a typical and classical chemical engineering topic.. Assume that you are a newly employed Chemical Engineer and your supervisor wants to test how best you understand mass transfer concepts through the following question. Let the chemical reaction of the components of species X with dissolved components of species Y be governed by the following equation:X + Y products (1) Assuming that species X are consumed through a first order reaction derive an equation for the molar flux of X based on the film theory. State any assumptions and define any nomenclature used.