Please do b-d

d) At what total system pressure (P) does the Knudsen diffu- sion coefficient for CO equal to one-half of the molecular diffusion coefficient?

24.11 Steam reforming of hydrocarbons is one way to make hydrogen gas (H) for fuel cell applications. However, the H2-rich product gas produced by steam reforming is contami- nated with 1.0 mole% of carbon monoxide (CO), which poisons the catalyst within the fuel cell, and so must be removed in order for the fuel cell to work better. It is desired to separate CO from the H2 gas using a microporous catalytic ceramic membrane. The average pore diameter of the porous membrane material is 15 nm, and the void fraction () is 0.30. The system operates at 5.0 atm total system pressure and temperature of 400C. a. Estimate the molar concentration of CO in the gas mixture. b. Estimate the molecular diffusion coefficient of CO in H, for the gaseous mixture at 5.0 atm and 400C. c. Estimate the effective diffusion of CO within the porous material. Assess the importance of Knudsen diffusion at the current process conditions