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Dihydrogen gas is obtained from natural gas by partial oxidation with steam as per following endothermic reaction:

CH4(g) + H2O(g) ⇌ CO(g) + 3H2(g)

(a) Write an expression for Kp for the above reaction. 

(b) How will the values of Kp and composition of equilibrium mixture be affected by

(i) increasing the pressure 

(ii) increasing the temperature 

(iii) using a catalyst

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(b) (i) value of KP will not change, equilibrium will shift in backward direction. 

(ii) value of KP will increase and reaction will proceed in forward direction. 

(iii) no effect.

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