The equilibrium for the reaction for the decomposition of PCl₅ to chlorine and PCl₃ is 0.042. PCl₅(g) ⇌ PCl₃(g) + Cl₂(g)
If the equilibrium concentrations are [PCl₃] = 0.010 M, [Cl₂] = 0.10 M, what is the value of [PCl₅]?

Question

Quizplus · Accepted Answer

We can use the equilibrium constant expression: K = [PCl₃][Cl₂]/[PCl₅] Plugging in the given values: 0.042 = (0.010)(0.10)/x Solving for x: x = (0.010)(0.10)/0.042 = 0.024 M Therefore, the answer is D) 0.024 M.

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