The Equilibrium Constant, K_p , for the Reaction H₂(g)

question 61

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

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Definitions:

Quantity Discount

A reduction in price per unit of a good or service based on the amount of the purchase, used to encourage larger orders.

Aluminum

A lightweight, silvery-white metallic element used broadly in manufacturing and construction due to its strength and corrosion resistance.

Marginal Analysis

An examination of the additional benefits of an activity compared to the additional costs incurred by that same activity.

Extra Benefit

The additional advantage or value received from consuming one more unit of a good or service.