When a packed bed reactor is isothermal: The energy balance doesn't apply Because the equation used is catalyst weight, temperature doesn't matter There is no change in heat capacity due to changing composition There is no heat transfer to the surroundings The change in temperature in a differential slice of the reactor is zero When a packed bed reactor is adiabatic: O The change in temperature in a differential slice of the reactor is zero Because the equation used is catalyst weight, temperature doesn't matter The energy balance doesn't apply O There is no heat transfer to the surroundings There is no change in heat capacity due to changing composition You know from the research lab that your reaction is exothermic. Yet, when the reaction is run on a packed bed reactor, the measured temperature of the outlet stream is less than the temperature of the inlet (i.e. To > T). What do you reason is happening in the reactor? There are multiple reactions The reaction is at equilibrium The change in temperature in a differential slice of the reactor is positive You need to include the Ergun equation for pressure drop O The heat removal is greater than the heat generated from the reaction O The heat capacity of the inlet stream is large