For the Reaction PCl₃(g) + Cl₂(g) ⇌ PCl₅(g) at a Particular

question 75

Multiple Choice

For the reaction PCl₃(g) + Cl₂(g) ⇌ PCl₅(g) at a particular temperature, K_c = 24.3. Suppose a system at that temperature is prepared with [PCl₃] = 0.10 M, [Cl₂] = 0.15 M, and [PCl₅] = 0.60 M. Which of the following is true based on the above

• A) Q_c > K_c, the reaction proceeds from left to right to reach equilibrium
• B) Q_c > K_c, the reaction proceeds from right to left to reach equilibrium
• C) Q_c < K_c, the reaction proceeds from left to right to reach equilibrium
• D) Q_c < K_c, the reaction proceeds from right to left to reach equilibrium
• E) Q_c = K_c, the reaction is currently at equilibrium

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