The Equilibrium Constant,K_P,for the Reaction H₂(g)+ I₂(g) 2HI(g)is 55

question 129

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)I need to know the volume of the container before deciding.
• E)Need to know the starting pressures of all substances before deciding.

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