Equilibrium Shift in Chemical Reaction

Medium General Chemistry Chemical Equilibrium

Consider the chemical equilibrium established in the following reaction:

A(g) + B(g) <=> C(g) + D(g)

The equilibrium constant (K_c) for this reaction at a certain temperature is given as 4.0. If a system at equilibrium has the concentrations [A] = 0.5 M, [B] = 0.5 M, [C] = 0.2 M, and [D] = 0.2 M, which of the following statements is true regarding the system?

The system will shift to the left to reach equilibrium.

The system is at equilibrium since K<sub>c</sub> matches the ratio.

The system will shift to the right to increase the concentration of products.

The reaction will proceed only in the forward direction.

Hint

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