10462ndspring2011f1

10462ndspring2011f1 - GeneralChemistryI exam2 Form 1...

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General Chemistry I exam 2 10/20/2011 R. Lopez de la Vega Name_____________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Give the direction of the reaction, if K >> 1. A) If the temperature is raised, then the forward reaction is favored. B) If the temperature is raised, then the reverse reaction is favored. C) The forward reaction is favored. D) The reverse reaction is favored. E) Neither direction is favored. 1) 2) Express the equilibrium constant for the following reaction. CH 3 Cl(g) + 1/2 Cl 2 (g) CH 2 Cl 2 (g) + 1/2 H 2 (g) A) K = [CH 2 Cl 2 ][H 2 ] 1/2 [CH 3 Cl][Cl 2 ] 1/2 B) K = [CH 3 Cl][Cl 2 ] [CH 2 Cl 2 ][H 2 ] C) K = [CH 3 Cl] 2 [Cl 2 ] [CH 2 Cl 2 ] 2 [H 2 ] D) K = [CH 3 Cl][Cl 2 ] 1/2 [CH 2 Cl 2 ][H 2 ] 1/2 E) K = [CH 2 Cl 2 ] 2 [H 2 ] [CH 3 Cl] 2 [Cl 2 ] 2) 3) What is Δ n for the following equation in relating K c to K p ? N 2 O 4 (g) 2NO 2 (g) A) - 2B ) 2 C ) - 1 D) 3 E) 1 3) 4) The equilibrium constant is given for one of the reactions below. Determine the value of the missing equilibrium constant. H 2 (g) + Br 2 (g) 2 HBr(g) K c = 3.8 × 10 4 2 HBr(g) H 2 (g) + Br 2 (g) K c = ? A) 5.3 × 10 - 5 B) 2.6 × 10 - 5 C) 1.6 × 10 3 D) 6.4 × 10 - 4 E) 1.9 × 10 4 4) A 1
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5) The reaction below has a K p value of 3.3 x 10 - 5 . What is the value of K c for this reaction at 700 K? 2 SO 3 (g) 2 SO 2 (g) + O 2 (g) A) 1.7 × 10 6 B) 3.3 × 10 - 5 C) 1.9 × 10 - 3 D) 3.0 × 10 4 E) 5.7 × 10 - 7 5) 6) In which of the following reactions will K c = K p ? A) CH 4 (g) + H 2 O(g) CO(g) + 3 H 2 (g) B) N 2 (g) + 3 H 2 (g) 2 NH 3 (g) C) H 2 (g) + I 2 (g) 2 HI(g) D) N 2 O 4 (g) 2NO 2 (g) E) CO(g) + 2 H 2 (g) CH 3 OH(g) 6) 7) Express the equilibrium constant for the following reaction. KClO 3 (s) KClO (s) + O 2 (g) A) K = [KClO][O 2 ] [ KClO 3 ] B) K = [ KClO 3 ] [KClO][O 2 ] C) K = [KClO] 2 [O 2 ] 2 [ KClO 3 ] 2 D) K = [O 2 ] - 1 E) K = [O 2 ] 7) 8) Determine the value of K c for the following reaction if the equilibrium concentrations are as follows: [PCl 5 ] eq = 0.56 M, [PCl 3 ] eq = 0.23 M, [Cl
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10462ndspring2011f1 - GeneralChemistryI exam2 Form 1...

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