The irreversible elementary gas-phase reaction A+B→C+D is carried out isothermally at 305 K in a packed-bed reactor with 100 kg of catalyst.

The entering pressure was 20 atm and the exit pressure is 2 atm. The feed is equal molar in A and B and the flow is in the turbulent flow regime, with F_A0 = 10 mol/min and C_A0 = 0.4 mol/dm³. Currently 80% conversion is achieved. What would be the conversion if the catalyst particle size were doubled and everything else remained the same?

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P= 20 atm P= 2 atm