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pract.quiz2

# pract.quiz2 - equilibrium E Q = K and the reaction is at...

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1. Which of the following statements are correct? 1. The ideal gas law provides an easy ability to convert between Kp and Kc. 2. Solids and pure liquids are assumed to have unit activities. 3. Each reaction has its own characteristic equilibrium constant. 4. The value of K is independent of temperature A. 1 and 3 B. 2 and 4 C. 1, 2, 3 and 4 D. 1, 2 and 3. 2. Consider the following reaction: Ni(CO) 4 (g) Ni(s) + 4CO(g) If the initial concentration of Ni(CO) 4 (g) is 1.0 M , and x is the equilibrium concentration of CO(g), what is the correct equilibrium relation? A. B. C. D. E. 3. Consider the gas-phase reaction, 2 SO 2 + O 2 <=> 2 SO 3 , for which K p = 2 at a given temperature. If the mixture is analyzed and found to contain 0.9 bar of SO 2 , 3.1 bar of O 2 and 2.2 bar of SO 3 , describe the situation: A. Q < K and more reactants will be made to reach equilibrium. B. Q < K and more products will be made to reach equilibrium. C. Q > K and more reactants will be made to reach equilibrium. D. Q > K and more products will be made to reach

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Unformatted text preview: equilibrium. E. Q = K and the reaction is at equilibrium 4. Consider the reaction 3Fe(s) + 4H 2 O(g) 4H 2 (g) + Fe 3 O 4 (s) If the volume of the container is reduced, A. B. C. D. E. 5. The standard Gibbs free energy of reaction for 2 O 3 (g) → 3 O 2 (g) is Δ G r ° = 326.4 kJ × mol − 1 − at 298 K. Calculate the equilibrium constant for this reaction. A. 1.63 × 10 57 B. 11.7 × 10 6 C. 1.14 D. 6.14 × 10 58 − 6. Consider the reaction 2HI(g) H 2 (g) + I 2 (g) At 298 K, K c = 1.3 × 10 –3 , whereas at 783 K, K c = 2.2 × 10 –2 . Which of the following is true? A. B. C. D. E. 7. Which of the following salts would yield a molar solubility closest to 0.00001 M if the exponent for the Ksp was -26? A. a salt of the form A2B B. a salt of the form AB3 C. a salt of the form A2B3 D. a salt of the form AB E. a salt of the form AB2 8. Which of the following statements about water's autodissociation is not true? A. B. C. D. E....
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pract.quiz2 - equilibrium E Q = K and the reaction is at...

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