The Equilibrium Constant,K_p ,For the Reaction

Multiple Choice

The equilibrium constant,K_p ,for the reaction
CO(g) + H₂O(g)
CO₂(g) + H₂(g)
At 986°C is 0.63.A rigid cylinder at that temperature contains 1.2 atm of carbon monoxide,0.20 atm of water vapor,0.30 atm of carbon dioxide,and 0.27 atm of hydrogen.Is the system at equilibrium?

A) Yes.
B) No,the forward reaction must proceed to establish equilibrium.
C) No,the reverse reaction must proceed to establish equilibrium.
D) The volume of the container must be known before deciding.
E) The starting concentrations of all substances must be known before deciding.