The irreversible elementary gas phase reaction is carried out isothermally at 300K in a packed bed reactor with 100kg of catalyst. The entering pressure was 20atm and the exit pressure is 2atm. The feed is equal molar in A and B and the flow is in the turbulent flow regime, with FAO=10mol/min and CAO=0.4mol/dm3. Currently 80% conversion is achieved. If the specific reaction rate at 400K is 25dm6/kg cat-mol-min what is the activation energy? If the diameter of a PBR is doubled while keeping the turbulent flow mass flow rate, m, constant, what can be said about that factor by which the rate of pressure drop (dy/dW) will be affected