The K C for the Reaction

question 113

Multiple Choice

The K c for the reaction,
PCl₅ (g) PCl₃(g) + Cl₂ (g) , at a particular temperature is 4.0*10^{- 2} .
How many moles of PCl₅ must be placed in an empty 1.0 liter flask to have the equilibrium concentration of Cl₂ = 0.15 M ?

• A) 0.71
• B) 0.15
• C) 1.4
• D) 6.7
• E) 0.23

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