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2 A(aq) +3 B(aq) → A2B3(aq) - An experiment is conducted at 25°C and the rate of appearance of the product AzBa(aq) is measured as the concentrations of the reactants were varied. Data from the trials are shown below. Initial Rate of Appearance of A2B (M/s) Trial [A] (M) [B] (M) 1 0.200 0.300 5.0 x 102 2 0.200 0.900 4.5 x 10¹ 3 0.400 0.300 1.0 x 10 4 0.135 0.225 ??? a. Determine the rate law for the reaction. Justify your answer. b. Determine the value of k, including units. C. Determine the rate of Trial 4. d. Determine the initial rate of disappearance of A for trial 2. c. f. A possible reaction mechanism has a 1" elementary step as shown below: A+B AB Could this first step be the rate determining step? Explain your reasoning. In the reaction mechanism the compound MnO: appears. A student makes the claim "The order of MnO2 must be zero since it does not appear in the overall balanced equation". Do you agree or disagree with the student? Explain your reasoning. g. In trial 1, 10 mL of A and 10 mL of B are mixed and the reaction goes to completion. i. Determine the number of moles of B used in the reaction. ii. The reaction vessel is heated and all the water is driven off, leaving only 0.124 grams of A:B₁(s). Determine the molar mass of A₂B₁. + >

2 A(aq) +3 B(aq) → A2B3(aq) - An experiment is conducted at 25°C and the rate of appearance of the product AzBa(aq) is measured as the concentrations of the reactants were varied. Data from the trials are shown below. Initial Rate of Appearance of A2B (M/s) Trial [A] (M) [B] (M) 1 0.200 0.300 5.0 x 102 2 0.200 0.900 4.5 x 10¹ 3 0.400 0.300 1.0 x 10 4 0.135 0.225 ??? a. Determine the rate law for the reaction. Justify your answer. b. Determine the value of k, including units. C. Determine the rate of Trial 4. d. Determine the initial rate of disappearance of A for trial 2. c. f. A possible reaction mechanism has a 1" elementary step as shown below: A+B AB Could this first step be the rate determining step? Explain your reasoning. In the reaction mechanism the compound MnO: appears. A student makes the claim "The order of MnO2 must be zero since it does not appear in the overall balanced equation". Do you agree or disagree with the student? Explain your reasoning. g. In trial 1, 10 mL of A and 10 mL of B are mixed and the reaction goes to completion. i. Determine the number of moles of B used in the reaction. ii. The reaction vessel is heated and all the water is driven off, leaving only 0.124 grams of A:B₁(s). Determine the molar mass of A₂B₁. + >

Physical Chemistry
Physical Chemistry
2nd Edition
ISBN:9781133958437
Author:Ball, David W. (david Warren), BAER, Tomas
Publisher:Ball, David W. (david Warren), BAER, Tomas
Chapter20: Kinetics
Section: Chapter Questions
Problem 20.38E: List at least four experimentally determined parameters that you, an experimenter, can define when...
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2 A(aq) +3 B(aq) → A2B3(aq) - An experiment is conducted at 25°C and the rate of appearance of the product AzBa(aq) is measured as the concentrations of the reactants were varied. Data from the trials are shown below. Initial Rate of Appearance of A2B (M/s) Trial [A] (M) [B] (M) 1 0.200 0.300 5.0 x 102 2 0.200 0.900 4.5 x 10¹ 3 0.400 0.300 1.0 x 10 4 0.135 0.225 ??? a. Determine the rate law for the reaction. Justify your answer. b. Determine the value of k, including units. C. Determine the rate of Trial 4. d. Determine the initial rate of disappearance of A for trial 2. c. f. A possible reaction mechanism has a 1" elementary step as shown below: A+B AB Could this first step be the rate determining step? Explain your reasoning. In the reaction mechanism the compound MnO: appears. A student makes the claim "The order of MnO2 must be zero since it does not appear in the overall balanced equation". Do you agree or disagree with the student? Explain your reasoning. g. In trial 1, 10 mL of A and 10 mL of B are mixed and the reaction goes to completion. i. Determine the number of moles of B used in the reaction. ii. The reaction vessel is heated and all the water is driven off, leaving only 0.124 grams of A:B₁(s). Determine the molar mass of A₂B₁. + >
Transcribed Image Text:2 A(aq) +3 B(aq) → A2B3(aq) - An experiment is conducted at 25°C and the rate of appearance of the product AzBa(aq) is measured as the concentrations of the reactants were varied. Data from the trials are shown below. Initial Rate of Appearance of A2B (M/s) Trial [A] (M) [B] (M) 1 0.200 0.300 5.0 x 102 2 0.200 0.900 4.5 x 10¹ 3 0.400 0.300 1.0 x 10 4 0.135 0.225 ??? a. Determine the rate law for the reaction. Justify your answer. b. Determine the value of k, including units. C. Determine the rate of Trial 4. d. Determine the initial rate of disappearance of A for trial 2. c. f. A possible reaction mechanism has a 1" elementary step as shown below: A+B AB Could this first step be the rate determining step? Explain your reasoning. In the reaction mechanism the compound MnO: appears. A student makes the claim "The order of MnO2 must be zero since it does not appear in the overall balanced equation". Do you agree or disagree with the student? Explain your reasoning. g. In trial 1, 10 mL of A and 10 mL of B are mixed and the reaction goes to completion. i. Determine the number of moles of B used in the reaction. ii. The reaction vessel is heated and all the water is driven off, leaving only 0.124 grams of A:B₁(s). Determine the molar mass of A₂B₁. + >
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