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AP Chemistry
7.10 Reaction Quotient and Le Châtelier’s Principle
7.9 Introduction to Le Châtelier’s Principle
7.8 Representations of Equilibrium
IntermediateMCQDrawing RepresentationsConceptual15.4k
Initial equilibrium mixture in a volume of \(1.0\text{ L}\).
Initial equilibrium mixture in a volume of \(1.0\text{ L}\).
A reversible gas-phase reaction is represented by the equation below.

\[ 2\,\text{X(g)} \rightleftharpoons \text{X}_2\text{(g)} \]

The particulate diagram below represents an equilibrium mixture of \(\text{X(g)}\) and \(\text{X}_2\text{(g)}\) in a cylinder fitted with a movable piston at an initial volume of \(1.0\text{ L}\) and constant temperature. The piston is then pushed down, instantly reducing the volume of the container to \(0.50\text{ L}\), and the system is allowed to reach a new equilibrium at the same temperature. Which of the following particulate diagrams best represents the system after chemical equilibrium is re-established at the new volume?

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