Question

How do I calculate the value for the equilibrium constant at any pressure and temperature for the reaction CO2 + c <==> 2CO ?

Answer 1

From first principles? You could assume both are ideal gases, then construct the partition function for each gas, and calculate from that the equilibrium pressure constant. A good graduate statistical mechanics textbook, like McQuarrie, will show you how. It may be accurate enough at high temperatures and low pressures, where the ideality assumption holds good.

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