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15 Chemical Equilibrium

15 Chemical Equilibrium - Which one of the following...

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1 1 Which one of the following statements is not correct? A) All catalysts work by changing the mechanism, lowering the activation energy, and increasing the rate constant for some reaction. B) A reaction intermediate can serve as a catalyst. C) Neither a catalyst nor a reaction intermediate is included as a reactant or product in the overall reaction equation. D) A homogeneous catalyst can be a reactant in Step 1 in a reaction mechanism. E) A reaction intermediate can be a reactant in Step 1 in a reaction mechanism. 2 Today’s To Do Ch 14 Chemical Equilibrium Some things are review. Other things are new! Convert between K P and K C Relate equilibrium constants for different reactions Use a RICE table to solve equilibrium problems
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2   c d eq eq a b eq eq A B C D K A B For reactions in the gas phase, the equilibrium constant can be expressed in terms of concentrations or partial pressures. aA + bB cC + dD b B a A d D c C P P P P P K Of course, the value of K P is different than the value of K. Note subscript C on K C is not necessary. Divide concentrations by 1M and pressures by 1 atm to produce equilibrium constants in terms of unitless activities.
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