In aqueous solution, and in contact with the right catalyst, reactant A is converted to product R by the elementary reaction A 2R. Initial concentration of A is 10³ mol/m³, feed rate is 10⁴ mol A/h, conversion is 90% and k=4m³/m³ cat s. For this reaction diameter of porous catalyst pellet is 6 mm and effective diffusion coefficient of A in the pellet is 4x10⁸ m³/m cat s. The bulk density of the packed bed is 2000 kg/m³.

(a) Under what condition did the reaction occur (no resistance, strong resistance, intermediate)?

(b) What is the effectiveness factor?

(c) What is the weight of the catalyst?

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