How will the yield of hydrogen change if the equilibrium is disturbed

Question

Endothermic reaction for the production of hydrogen gas CH4(g) + H2O(g) → CO(g) + 3 H2(g)?
How will the yield of hydrogen change if the equilibrium is disturbed by

a.Adding a catalyst.




b. Increasing the pressure.


c. Decreasing the temperature.

d. Adding inert argon gas.

 

e. decreasing the temperature 

Answer 1

These questions can be answered on the basis of Le Chatelier's principle.

 

The idea is that the system will move in such a way as to relieve a stress.

 

a)   catalyst :     No change.   Catalysts increase reaction rate, but do not shift the equlibrium

 

b) increasing the pressure:  The equilibrium will shift to the left because there are more moles of gas on the right than on the left

 

c) Decreasing the temperature:   The equilibrium will shift to the left because the reaction is endothermic. 

 

d) Adding inert argon gas:   No change.

 

e)  repeat of c).   However, increasing the temperature would shift the equilibrium to the right.