For the Reaction PCl₅ (G)⇌ PCl₃ (G)+ Cl₂ (G),K_c =

question 11

Multiple Choice

For the reaction PCl₅ (g) ⇌ PCl₃ (g) + Cl₂ (g) ,K_c = 0.0454 at 261 °C.If a vessel is filled with theses gases such that the initial concentrations are [PCl₅] = 0.2 M,[PCl₃] = 0.2 M,and [Cl₂] = 2.25 M,which of the following statements is TRUE?

• A)the reaction is at equilibrium
• B)the forward reaction is spontaneous
• C)the reverse reaction is spontaneous
• D)the forward reaction is exothermic
• E)the reverse reaction is exothermic

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