Carbon monoxide is burned at 200 °C under atmospheric pressure with dry air at 500 °C in excess of 90% of that theoretically necessary. The combustion products leave the reaction chamber at 1000 °C. Calculate the heat released in the reaction chamber in kilocalories per kg mol of CO burned, assuming complete combustion.

 

DATA:

Chemical reaction:

CO (g)  + ½ O₂ (g)  = CO₂ (g)

Energy balance equation:

 

where,

P = products = CO2, O2, N2

R = reactants = CO, Air

Calculation base 1.0 kg mol

Normal heat of reaction = ΔH25°C=-67636 kcal 

Heat capacity of substances

 

SUBSTANCE	AVERAGE MOLAR HEAT CAPACITY between 25 -1000°C
CO	7.017
Air	7.225
CO2	11.92
O2	7.941
N2	7.507

q = = + 25c -