The Equilibrium for the Reaction for the Decomposition of PCl5

question 58

Multiple Choice

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]?

• A)0.010 M
• B)0.0020 M
• C)0.042 M
• D)0.024 M
• E)0.0010 M

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