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Lecture_Notes_091409b

# Lecture_Notes_091409b - Lecture Note

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Equilibrium Concentrations y At a lower temperature, the reaction: { PCl 5 (g) PCl 3 (g) +Cl 2 (g) y Has an equilibrium constant of 5.8 x 10 -5 . Calculate the equilibrium concentrations of all species, if initial concentration of [PCl 5 ] is 0.200 M.

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Equilibrium Pressures y At 700 K, K p = 0.140 for the reaction: { ClF 3 (g) ClF (g) + F 2 (g) y Calculate the equilibrium partial pressures of all molecules if only ClF 3 is present initially, at a partial pressure of 1.47 atm. What is the total pressure at equilibrium?
Equilibrium Problem y The equilibrium constant for the formation of NH 3 is 4.20 at 600 K. When a quantity of gaseous NH 3 was placed in a 1.00 L reaction vessel at 600 K and the reaction was allowed to reach equilibrium, the vessel was found to contain 0.200 mol of N 2 . How many moles of NH 3 were placed in the vessel?

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Le Châtelier’s Principle y If a change is imposed on a system at equilibrium, the position of the equilibrium will shift in a direction that tends to reduce that change.
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