(Solved):   Question 3 (8 marks) The gas-phase reaction is shown as \( 3 \mathrm{~A}(\mathrm{~g})+\mat ...

 

Question 3 (8 marks) The gas-phase reaction is shown as \( 3 \mathrm{~A}(\mathrm{~g})+\mathrm{B}(\mathrm{g}) \leftrightharpoons 4 \mathrm{C}(\mathrm{g})+2 \mathrm{D}(\mathrm{g}) \) Table 2 shows the thermodynamic property of the components involve in the reaction. Assume the values of enthalpy change are constant at any temperature. Determine the reaction equilibrium constant at \( 250^{\circ} \mathrm{C} \).