Normal heptane is dehydrocyclicized to toluene and hydrogen in a continuous vapor-phase reaction: C7H16 → C6H5CH3 +4 H2 Pure heptanes at 400°C is fed to the reactor. The reactor operates isothermally at 400°C and the reaction goes to completion. Data: The average heat capacity of n-heptanes between 25°C and 400°C is 0.2427 kJ/(mol °C).

(a) Taking a basis of 1 mol of heptanes fed, draw and label a flowchart.

(b) Taking elemental species [C(s), H2 (g)] at 25°C as references, prepare and fill in an inlet—outlet enthalpy table.

(c) Calculate the required heat transfer to or from the reactor (state which it is) in kJ.

(d) What is the heat of the heptanes dehydrocyclization reaction (ΔHг) at 400°C and 1 atm?