Final_Exam_Review - Final Exam Review Kinetics H2O2 can be...

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Final Exam Review
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Kinetics
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H 2 O 2 can be used as a disinfectant; it decomposes as: 2 H 2 O 2 2 H 2 O + O 2 If the rate of appearance of O 2 is 0.0014 Ms –1 , what is the rate of disappearance of H 2 O 2 ? a) 0.0014 Ms –1 b) 0.00070 Ms –1 c) 0.0028 Ms –1 d) None of the above are correct
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a) 0.0014 Ms –1 b) 0.00070 Ms –1 c) 0.0028 Ms –1 d) None of the above are correct H 2 O 2 can be used as a disinfectant; it decomposes as: 2 H 2 O 2 2 H 2 O + O 2 If the rate of appearance of O 2 is 0.0014 Ms –1 , what is the rate of disappearance of H 2 O 2 ?
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What is the order of the reaction with respect to OH ? 2 ClO 2 ( aq ) + 2 OH ( aq ) ClO 3 ( aq ) + ClO 2 ( aq ) + H 2 O ( l ) [ClO 2 ][ O H ] Initial Rate (M/s) 0.060 0.030 0.0248 0.020 0.030 0.00276 0.020 0.090 0.00828 a) 1 b) 0 c) 2 d) 3
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What is the order of the reaction with respect to OH ? 2 ClO 2 ( aq ) + 2 OH ( aq ) ClO 3 ( aq ) + ClO 2 ( aq ) + H 2 O ( l ) [ClO 2 ][ O H ] Initial Rate (M/s) 0.060 0.030 0.0248 0.020 0.030 0.00276 0.020 0.090 0.00828 a) 1 b) 0 c) 2 d) 3
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A possible mechanism for the overall reaction is found below: Br 2 ( g ) + 2 NO ( g ) 2 NOBr ( g ) Step 1 (fast) NO ( g ) + Br 2 ( g ) NOBr 2 ( g ) Step 2 (slow) NOBr 2 ( g ) + NO ( g ) 2 NOBr ( g ) The rate law based on this mechanism is: a) k 1 [NO] 1/2 b) k 1 [Br] 1/2 c) (k 1 k 2 /k -1 )[NO] 2 [Br 2 ] d) (k 1 /k -1 ) 2 [NO] 2
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A possible mechanism for the overall reaction is found below: Br 2 ( g ) + 2 NO ( g ) 2 NOBr ( g ) Step 1 (fast) NO ( g ) + Br 2 ( g ) NOBr 2 ( g ) Step 2 (slow) NOBr 2 ( g ) + NO ( g ) 2 NOBr ( g ) The rate law based on this mechanism is: a) k 1 [NO] 1/2 b) k 1 [Br] 1/2 c) (k 1 k 2 /k -1 )[NO] 2 [Br 2 ] d) (k 1 /k -1 ) 2 [NO] 2
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Equilibrium
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The following boxes represent reactions of the type A B at equilibrium. In which of the following is K eq = 2? Reaction I Reaction III Reaction II A B 1) Reaction I 2) Reaction II 3) Reaction III 4) All have K eq = 2
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The following boxes represent reactions of the type A B at equilibrium. In which of the following is K eq = 2? Reaction I Reaction III Reaction II A B 1) Reaction I 2) Reaction II 3) Reaction III 4) All have K eq = 2
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Which of the following is a true statement? 1) If a chemical equation is reversed, K is inverted. 2) If the coefficients in a chemical equation are multiplied by a factor, K is raised to the same factor. 3) If two equations are added, the corresponding K values are multiplied to obtain the overall equilibrium constant. 4) Statements 1-3 are ALL true.
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Which of the following is a true statement? 1) If a chemical equation is reversed, K is inverted. 2) If the coefficients in a chemical equation are multiplied by a factor, K is raised to the same factor. 3) If two equations are added, the corresponding K values are multiplied to obtain the overall equilibrium constant. 4) Statements 1-3 are ALL true.
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