Surface Reaction with Slow Desorption

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Problem 3. Surface Reaction with Slow Desorption For the surface catalyzed reaction A → B that proceeds through the corresponding adsorbed species, it is known that the rate-limiting step is desorption of B. ка ka A Aad Bad B a) Derive an expression for the overall rate of the reaction. b) Assuming that A adsorbs strongly to the surface, and that the reaction equilibrium constant, Kg = 4, what is the fraction of surface sites occupied by adsorbed A molecules? B molecules? Further, if the surface reaction is endothermic, can you predict whether the overall rate of reaction will increase or decrease as the temperature is increased? If so, what is your prediction? c) Now if small fractions of a strongly adsorbing inert, I, interfere with the reaction (I lad). Derive a new rate expression, given the partial pressure of the inert is P. K
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