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AP Chemistry/Unit 7: Equilibrium
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Reaction Quotient and Equilibrium

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Consider the reversible reaction represented by the equation A⇌BA \rightleftharpoons B. The equilibrium constant for this reaction is Keq=0.25K_{eq} = 0.25. The table provides the concentrations of species A and B at a particular instant. Which of the following statements accurately describes the system at this time?

Species Concentration (M)
A 0.20
B 0.05
A

The reaction will shift to produce more products.

B

The reaction will shift to produce more reactants.

C

The system is at equilibrium.

D

The reaction will accelerate as it seeks equilibrium.

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