Term
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Definition
| - The point at which the forward and reverse processes of a chem. rxn are occuring at the same rate |
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Term
| Conditions of Equilibrium |
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Definition
- both the forward & reverse reactions are occuring
- both the forward & reverse rxns are happening at the same rate
- once equilibrium is achieved the concentration of each reactant & product remain the same |
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Term
| The equilibrium Constant (Keq) |
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Definition
| - the ratio of the rate constants is a constant at that temp, this expression is called the law of mass action |
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Term
| Equilibrium Constants in terms of Pressure |
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Definition
| - When reactants & products are both gases the equilibrium expression is then written for partial pressures instead of molar concentrations |
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Term
| Relationship between Kc & Kp |
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Definition
- Kp = Kc (RT)^Deltan
- change in N= (moles of gaseous products)-(moles of gaseous reactants)
- R= .0821 |
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Term
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Definition
| - Equilibria in which all the reactants and products are present in the same phase |
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Term
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Definition
| - Equilibria where one ore more reactants or products are present in a different phase are called heterogeneous equilibria |
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Term
| Hterogenous Equilbrium (cont.) |
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Definition
| - If a pure solid (s) or pure liquid (l) is involved in a heterogenous equilibrium it's concentration is not included in the equilibrium constant expression |
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Term
| Interpreting & Working w/ Equilibrium Constants |
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Definition
| - if the K equilibrium constant is >> 1 than the equilibrium lies to the right, the products dominate |
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Term
| Interpreting & working w/ Equilibrium Constants |
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Definition
| - if the K equilibrium is << 1 the equilibrium lies to the left and the reactants dominate |
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Term
| The Direction of Chemical Equation & K |
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Definition
| - The equilibrium constant for a reaction in one direction is the reciprocal of the equilibrium constant of the reaction in the opposite direction |
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