# If k c1 is the equilibrium constant for the reaction

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Chapter 11 / Exercise 11.19
Chemistry: Principles and Practice
Reger Chem
Expert Verified
2) If K C1 is the equilibrium constant for the reaction: H 2 SO 4 (aq) + H 2 O(l) H 3 O + (aq) + HSO 4 (aq) and K C2 is the equilibrium constant for the reaction: HSO 4 (aq) + H 2 O(l) H 3 O + (aq) + SO 4 2 (aq) what is the equilibrium constant for the overall equilibrium: H 2 SO 4 (aq) + 2 H 2 O(l) 2 H 3 O + (aq) + SO 4 2 (aq) a) K C2 (the slower step) b) K C1 + K C2 c) K C1 /K C2 d) K C1 – K C2 e) K C1 x K C2
3) If K c = 7.04 x 10 -2 for the reaction 2 HBr(g) H 2 (g) + Br 2 (g), what is the value of K c for the reaction: ½ H 2 (g) + ½ Br 2 (g) HBr(g)?
4) If K c is the equilibrium constant for a forward reaction, what is K c for two times the reverse reaction?
5) A reaction reaches dynamic equilibrium at a given temperature when .
6) What is K p at 1273 ° C for the reaction 2 CO (g) + O 2 (g) 2 CO 2 (g) if K c is 2.24 x 10 22 at the same temperature? a) 1.35 b) 5.66 x 10 -21 c) 1.77 x 10 20 d) 5.66 x 10 21
7) At a certain temperature bromine and nitric oxide react to form nitrosyl bromide: Br 2 (g) + NO (g) 2 NOBr (g) When initial amounts of Br 2 , NO, and NOBr are mixed, the concentration of NOBr increases. Which statement below is true about the initial mixture? c c c .
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Chapter 11 / Exercise 11.19
Chemistry: Principles and Practice
Reger Chem
Expert Verified
1011ExamPrepWorksheet.doc 8) The equilibrium constant K p equals 3.40 at 25 ° C for the isomerization reaction cis -2-butene ' trans -2-butene If a flask initially contains 1.00 atm of each gas, in what direction will the reaction proceed to reach equilibrium?
9) Which statement about the change of a concentration of a solid during a reaction is most correct?
10) Once the following equation has been correctly balanced, determine which of the following equilibrium constant expressions for K c best applies. C (s) + H 2 O (g) ' C 2 H 5 OH (g) + O 2 (g) (not balanced) a) [ ] [ [ ] [ ] ] O H C O OH H C 2 2 5 2 c = b) [ ] [ ] [ ] [ ] 3 2 2 2 5 2 c O H C O OH H C K = c) [ ] [ [ ] ] O H O OH H C 2 2 5 2 c = d) [ ] [ ] [ ] 3 2 2 5 2 c O H O OH H C K = K K