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1. Consider these three reactions as the elementary steps in the mechanism for a chemical reaction. (i) Cl₂ (g) + Pt (s) → 2C) (g) + Pt (s) (ii) Cl (g)+ CO (g) + Pt (s) → CICO(g) + Pt (s) (iii) Cl (g) + CICO (g) → Cl,CO (g) 2600 2400 2200 2000 1800 1600 1400 1200 1000 800 600 400 200 0 -200- -400 -600 -800- Ea = 1550 kJ Ea = 2240 kJ Ea = 2350 kJ a. Draw the potential energy diagram for the reaction. Label the data points for clarity. The potential energy of the reactants is 600 kJ Reaction Progress b. What is the overall chemical equation? ΔΗ = - 950 kJ AH = 575 kJ AH = -825 kJ c. What is the overall change in enthalpy for the above chemical reaction?

1. Consider these three reactions as the elementary steps in the mechanism for a chemical reaction. (i) Cl₂ (g) + Pt (s) → 2C) (g) + Pt (s) (ii) Cl (g)+ CO (g) + Pt (s) → CICO(g) + Pt (s) (iii) Cl (g) + CICO (g) → Cl,CO (g) 2600 2400 2200 2000 1800 1600 1400 1200 1000 800 600 400 200 0 -200- -400 -600 -800- Ea = 1550 kJ Ea = 2240 kJ Ea = 2350 kJ a. Draw the potential energy diagram for the reaction. Label the data points for clarity. The potential energy of the reactants is 600 kJ Reaction Progress b. What is the overall chemical equation? ΔΗ = - 950 kJ AH = 575 kJ AH = -825 kJ c. What is the overall change in enthalpy for the above chemical reaction?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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d. What is the overall amount of activation energy for the above chemical reaction? e. Which reaction intermediate would be considered a catalyst (if any) and why? f. If you were to add 2700kJ of energy to the reaction (e.g. 2700 kJ of heat or electricity), would you be able to make the reaction reverse itself (i.e. have the products become reactants)? Justify your answer. g. If you were to added a positive catalyst to step (ii) what would the end result be? Explain your prediction. h. Your friend is looking at your graph and states that she believes that step (ii) is the rate determining step. Do you agree with her? If you do not agree with her, what step would you pick as the RDS?
Transcribed Image Text:d. What is the overall amount of activation energy for the above chemical reaction? e. Which reaction intermediate would be considered a catalyst (if any) and why? f. If you were to add 2700kJ of energy to the reaction (e.g. 2700 kJ of heat or electricity), would you be able to make the reaction reverse itself (i.e. have the products become reactants)? Justify your answer. g. If you were to added a positive catalyst to step (ii) what would the end result be? Explain your prediction. h. Your friend is looking at your graph and states that she believes that step (ii) is the rate determining step. Do you agree with her? If you do not agree with her, what step would you pick as the RDS?
Potential Energy (kJ) 1. Consider these three reactions as the elementary steps in the mechanism for a chemical reaction. ΔΗ = - 950 kJ AH = 575 kl AH = -825 kJ (i) Cl₂ (g) + Pt (s) → 2C) (g) + Pt (s) (ii) Cl (g) + CO (g) + Pt (s) → CICO (g) + Pt (s) (iii) C1 (g) + CICO (g) → CI.CO (g) 2600 2400 2200 2000 1800 1600 1400 1200 1000 800 a. Draw the potential energy diagram for the reaction. Label the data points for clarity. The potential energy of the reactants is 600 kJ 600 400 200 0 -200 -400 -600 -800 Ea = 1550 kJ Ea = 2240 kJ Ea = 2350 kJ Reaction Progress b. What is the overall chemical equation? c. What is the overall change in enthalpy for the above chemical reaction?
Transcribed Image Text:Potential Energy (kJ) 1. Consider these three reactions as the elementary steps in the mechanism for a chemical reaction. ΔΗ = - 950 kJ AH = 575 kl AH = -825 kJ (i) Cl₂ (g) + Pt (s) → 2C) (g) + Pt (s) (ii) Cl (g) + CO (g) + Pt (s) → CICO (g) + Pt (s) (iii) C1 (g) + CICO (g) → CI.CO (g) 2600 2400 2200 2000 1800 1600 1400 1200 1000 800 a. Draw the potential energy diagram for the reaction. Label the data points for clarity. The potential energy of the reactants is 600 kJ 600 400 200 0 -200 -400 -600 -800 Ea = 1550 kJ Ea = 2240 kJ Ea = 2350 kJ Reaction Progress b. What is the overall chemical equation? c. What is the overall change in enthalpy for the above chemical reaction?
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