Chapter 15 Practice Questions
Chapter 15. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The value of Keq for the equilibrium 1). H2 (g) + I2 (g) 2 HI (g). is 794 at 25 C. What is the value of Keq for the equilibrium below? 1/2 H2 (g) + 1/2 I2 (g) HI (g). A) 1588 B) C) 28 D) 397 E) 2) The value of Keq for the equilibrium 2). H2 (g) + I2 (g) 2 HI (g). is 794 at 25 C. At this temperature, what is the value of Keq for the equilibrium below? HI (g) 1/2 H2 (g) + 1/2 I2 (g). A) B) 28 C) D) 397 E) 1588. 3) The value of Keq for the equilibrium 3). H2 (g) + I2 (g) 2 HI (g). is at 427 C. What is the value of Keq for the equilibrium below? HI (g) 1/2 H2 (g) + 1/2 I2 (g). A) 27. B) C) 103. D) E) 10-4. 1. 4) Consider the following chemical reaction: 4). H2 (g) + I2 (g) 2HI (g). At equilibrium in a particular experiment, the concentrations of H2, I2 , and HI were M, M, and M, respectively. The value of Keq for this reaction is __________. A) 61 B) 10-3 C) 23 D) 111 E) 5) A reaction vessel is charged with hydrogen iodide, which partially decomposes to molecular 5).
B) It is an industrial synthesis of sodium chloride that was discovered by Karl Haber. C) It is a process for the synthesis of elemental chlorine. D) It is a process used for the synthesis of ammonia. E) It is a process used for shifting equilibrium positions to the right for more economical chemical synthesis of a variety of substances. 18)
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