The Reaction Quotient Video Lessons

Example

Problem: The value of the equilibrium constant at a given temperature for the reaction:                 2HI(g) ⇌ H2(g) + I2(g)         is 0.200.  If [HI] = 0.200 M, [H 2] = 0.200 M, and [I 2] = 0.200 M, determine if the reaction is at equilibrium. If it is not, in which direction will it proceed to reach equilibrium?     A)    The reaction is at equilibrium.     B)    The reaction is not at equilibrium, it will shift to the left.     C)    The reaction is not at equilibrium, it will shift to the right.     D)    It is not possible to tell if the reaction is at equilibrium.     E)    To reach equilibrium, the value of Keq must change.

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Problem Details

The value of the equilibrium constant at a given temperature for the reaction:

2HI(g) ⇌ H2(g) + I2(g)

is 0.200.  If [HI] = 0.200 M, [H 2] = 0.200 M, and [I 2] = 0.200 M, determine if the reaction is at equilibrium. If it is not, in which direction will it proceed to reach equilibrium?

A)    The reaction is at equilibrium.

B)    The reaction is not at equilibrium, it will shift to the left.

C)    The reaction is not at equilibrium, it will shift to the right.

D)    It is not possible to tell if the reaction is at equilibrium.

E)    To reach equilibrium, the value of Keq must change.

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the The Reaction Quotient concept. You can view video lessons to learn The Reaction Quotient. Or if you need more The Reaction Quotient practice, you can also practice The Reaction Quotient practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty ofThe value of the equilibrium constant at a given temperature...as medium difficulty.

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Our expert Chemistry tutor, Dasha took 2 minutes and 50 seconds to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Knutson's class at OREGONSTATE.