$4.$ A solid catalytic first order reaction for butane conversion is occurring at $4500$

C with

rate of the reaction $35$x $10-3$ cm$3$

$/$s$.$g of catalyst. The catalyst pore size is $95.$ The solid

density of the catalyst is $0\mathrm{.}95$ cc with particle size $10$ mm$.$ Considering Knudsen diffusion

at this small pore size and concentration of butane at pore mouth $0\mathrm{.}25$ mol$/$cc$,$ predict

whether the reaction is pore diffusion controlled or reaction controlled.