GATE CH 2021 CH Q38: Process Calculations and Thermodynamics

The combustion of carbon monoxide is carried out in a closed, rigid and insulated vessel. 1 mol of CO, 0.5 mol of O

and 2 mol of N

are taken initially at 1 bar and 298 K, and the combustion is carried out to completion.

The standard molar internal energy change of reaction (

) for the combustion of carbon monoxide at 298 K = −282 kJ mol

. At constant pressure, the molar heat capacities of N

and CO

are 33.314 J mol

and 58.314 J mol

, respectively. Assume the heat capacities to be independent of temperature, and the gases are ideal. Take R = 8.314 J mol

The final pressure in the vessel at the completion of the reaction is ______ bar (round off to 1 decimal place).

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