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| 1 . |
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Which one of the following is incorrect?
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| 2 . |
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The equilibrium constant for PCl5(g)  PCl3(g) + Cl2(g) is Keq = 0.5 at 500 K. What is the state of the vessel shown with respect to this equilibrium? 
(Phosphorus atoms are shown in red, chlorine atoms in green.)
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| 3 . |
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Identify the equation that would give the gaseous equilibrium constant expression: Keq = (pH22 x pO2)/pH2O2
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| 4 . |
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The equilibrium constant for reaction (1) below is 4.22 x 10-3. What is the value of the equilibrium constant for reaction (2)? (1) 3A + 2B  2D + E (2) 2D + E 3A + 2B
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| 5 . |
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For which of the following reactions is the value of Keq dependent on only one substance in the reaction?
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| 6 . |
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Which one of the following is the correct expression for Keq for the equation BaS(s) + 2O2(g) BaSO4(s)?
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| 7 . |
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Consider the reaction CH4(g) + 2H2O(g) CO2(g) + 4H2(g). What is the equilibrium constant expression if initially there are 4 atmospheres of CH4 and 2 atmospheres of H2O, and the equilibrium partial pressure of CO2 is found to be x?
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| 8 . |
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A mixture is prepared with PCO = 0.035, PCl2 = 0.015, and PCOCl2 = 0.95. It is known that Keq for the equilibrium CO(g) + Cl2(g) COCl2(g) is 1.2 x 103 at 400°C. Predict what will happen.
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| 9 . |
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At 300 K Keq = 24.8 for the reaction H2(g) + I2(g) 2HI(g). If 1.0 mole of H2 and 1.0 mole of I2 are placed in a 5.0-L container, what would be the equilibrium partial pressure of HI?
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| 10 . |
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This question pertains to the equilibrium
2 POCl3(g) 2PCl3(g) + O2(g)
for which  Horxn = +508 kJ.
How will the equilibrium of the reaction shift if the pressure inside the reaction vessel is increased through an addition of neon gas?
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| 11 . |
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How many of the following factors affect the numerical value of K? pressure initial concentration volume temperature chemical equation
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| 12 . |
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Consider the following equilibrium, for which H° < 0: 2SO2(g) + O2(g) 2SO3(g) How will each of the following affect an equilibrium mixture of the three gases? (i) O2(g) is added to the system (ii) the reaction mixture is heated (iii) the volume of the reaction vessel is doubled
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Answer choices in this exercise are randomized and will appear in a different order each time the page is loaded.
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