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# Wksht02 - CHM 2046/Myers 1 Worksheet 2 The two main...

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CHM 2046/Myers Worksheet 2 January 08, 2010 1. The two main Equilibrium Problems Types : Given one equation ( ] R [ ] P [ K = ) solve this for any one unknown. Given one equation, solve this for more than one unknown. 2. For the reaction indicated below, initially P cis = 1.00 atm and P trans = 0 atm. What should be the partial pressures of each after the system reaches equilibrium? cis -2-butene trans -2-butene Kp = 3.4 P cis = _______________ P trans = _________________ Note: The clue as to the problem type is in the wording:

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3. For the reaction shown (at T = 2000 °C) initially: P N 2 = P O 2 = 1.00 atm and P NO = 0 atm Find all partial pressures after the system reacts to equilibrium. N 2 + O 2 2 NO Kp = 0.10 P N 2 = P O 2 = _____________ P NO = _________________ 4. Predicting Equilibrium Shifts (when conditions change) . Example: Co(OH 2 ) 6 +2 + n(acetone) Co(acetone) n +2 + 6H 2 O(l) Add acetone, the reaction shifts ______ Add water, the reaction shifts _______ Reasoning : Think about the reaction rates, or use: Le Chatelier’s Principle: Concentration changes : Changing n: Changing V: Changing T:
Worksheet 2, continued page 3 5. Equilibrium Shift Problems. For each reaction, how will the change cause the equilibrium to shift? What will be the overall effect on the […] and n values?

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Wksht02 - CHM 2046/Myers 1 Worksheet 2 The two main...

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