Question

Nickel (II) oxide reacts with carbon monoxide to form nickel metal.

CO(g) + NiO(s) ⇄ CO2(g) + Ni(s) Kp = 20 at 873 K

If a reaction vessel at equilibrium contains solid Ni, solid NiO, 400 mm Hg of CO2, and 20 mm Hg of CO, doubling the amount of CO(g) present will lead to the production of more solid nickel at 873 K.

A) True

B) False

Answer 1

According to Le Chatelier's if some changes are imposed on the reaction at equilibrium then reaction will move in the direction where it can nullify those changes.

Reaction quotient (Q) = [CO_{​​​​​2}​] / [CO]

When we double amount of CO, Q decreases and becomes less than Kp. So reaction will move in forward direction due to which more solid Ni will be formed. So given statement is true.