Answer: The equilibrium will shift to the right direction i.e towards products.
Explanation:
Any change in the equilibrium is studied on the basis of Le-Chatelier's principle. This principle states that if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.
For the given equation:
[tex]H_2O(g)+CO(g)\leftrightharpoons H_2(g)+CO_2(g)[/tex]
Add more [tex]CO[/tex] gas
If the concentration of [tex]CO[/tex] that is the reactant is increased, so according to the Le-Chatlier's principle, the equilibrium will shift in the direction where decrease of concentration of [tex]CO[/tex] takes place. Therefore, the equilibrium will shift in the right direction i.e. towards the products.