Chem20B_week8 - Covel Tutoring Chem 20B lectures 1 2 Sophia...

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Covel Tutoring Chem 20B- lectures 1 & 2 Sophia Yang – [email protected] Week 8 Topic: Chemical Equilibrium Law of Mass Action: Kc = Kp = For complex reactions: - Gases enter equilibrium expression as ____________________ in ______ - Dissolved species enter as _________________________ in ____________ - Pure solids and pure liquids _______________________________________ Equilibrium Calculations (ICE): Le Chatelier’s Principle: - Changing Concentration Adding more reactants will ___________________________________________ Adding more products will ____________________________________________ - Changing Volume 2P 2 (g) ↔ P 4 (g)
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Decreasing volume will _______________________________________________ Increasing volume will _______________________________________________ - Changing Temperature The equilibrium constant for an endothermic reaction ________________ with increasing temperature The equilibrium constant for an exothermic reaction _________________ with increasing temperature Problem #1: An important step in the industrial production of hydrogen is the reaction of carbon monoxide with water: CO(g) + H 2 O(g) ↔ CO 2 (g) + H 2 (g) a) Use the law of mass action to write the equilibrium expression for this reaction b) At 500°C, the equilibrium constant for this reaction is 3.9.
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