The Equilibrium Constant,K_p,for the Reaction

question 83

Multiple Choice

The equilibrium constant,K_p,for the reaction
H₂(g) + I₂(g)
2HI(g)
Is 55.2 at 425°C.A rigid cylinder at that temperature contains 0.127 atm of hydrogen,0.134 atm of iodine,and 1.055 atm of hydrogen iodide.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.

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