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Multiple Choice: Fill in on scantron sheet with pencil. 1. Which reaction has a positive AG,...
Multiple Choice: Fill in circle on Scantron sheet with pencil. 1. Which of the following anions...
Multiple Choice: Fill in circle on Scantron sheet with pencil. 1. Which of the following anions is the best leaving group? A. NH2 B. CI C. CH3 D. OH E.H 2. Which of the following statements is (are) true about an SN2 reaction? A. The reaction is fastest with 1° halides. B. The reaction follows second-order kinetics. C. Changing the identity of the leaving group changes the rate of the reaction. D. Statements (The reaction is fastest with 1° halides)...
41. What is the name given to the reaction species that lies at an energy minimum between steps on a reaction energ...
41. What is the name given to the reaction species that lies at an energy minimum between steps on a reaction energy diagram? A) Transition state B) Activation energy C) Reactive intermediate D) Equilibrium product 42. Which of the following statements about a two-step reaction mechanism is true? A) The transition states are located at energy minima. B) Each step is characterized by its own value of AH and E. C) The rate-determining step has the lower energy transition state....
Multiple Choice. Bubble in the correct letter on your scantron. 1. Which point as labeled by...
Multiple Choice. Bubble in the correct letter on your scantron. 1. Which point as labeled by an asterisk (*) on the following energy profile is the transition state? Energy Energy Reaction path Reaction path Energy Enery Reaction path Reaction path 2. The reaction below has a kc value of 1.0 x 1012. What is the value of Kp for this reaction at 500 K? 2 SO2(g) + O2(g) = 2 SO3(g) A) 4.2 x 10-11 B) 1.0 x 1012 C)...
SCHE 231 Chapter 6, Worksheet 1 Energy Diagrams 1. Why might it be important to understand...
SCHE 231 Chapter 6, Worksheet 1 Energy Diagrams 1. Why might it be important to understand the energy associated with a chemical reaction? What is this energy associated with? 2. Enthalpy What is Enthalpy (AH)? When is ΔΗ Positive? when is ΔΗ negative? In the diagram below, label which reaction is exothermic and which is endothermic Enthalpy 04) Enthalpy Sarting Products materials AN Starting materials Products Reaction coordinate Reaction coordnate 3. Entropy What is Entropy (AS) What contributes to entropy?...
The following reaction has a small, positive AG and takes place slowly at room temperature: 4....
The following reaction has a small, positive AG and takes place slowly at room temperature: 4. НС-он . нCI H3C-C , н-он (a) The mechanism for the reaction is shown below. Which bond is being broken in the slowest step? Which bond is being made? slow Hас-он; - с Н-он Step 1 H3C-C endothermic fast Step 2 H,C-он; . сг Нас-он + Н-СI exothermic (b) Based on this multi-step mechanism, draw a free energy reaction coordinate diagram for the reaction....
The following reaction has a small, positive AG and takes place slowly at room temperature: 4....
The following reaction has a small, positive AG and takes place slowly at room temperature: 4. H-OH H3C-OH H-CI H3C-CI (a) The mechanism for the reaction is shown below. Which bond is being broken in the slowest step? Which bond is being made? slow Hас -он; Н-Он +CI Step 1 H3C-CI endothermic fast Н-СI Hас -он +CI + Step 2 HaC-он exothermic (b) Based on this multi-step mechanism, draw a free energy reaction coordinate diagram for the reaction. Draw in...
4. The following reaction has a small, positive AG and takes place slowly at room temper H3C-Cl + H-OH - H3C-OH + H...
4. The following reaction has a small, positive AG and takes place slowly at room temper H3C-Cl + H-OH - H3C-OH + H-CI (a) The mechanism for the reaction is shown below. Which bond is being broken in the sky step? Which bond is being made? slow Step 1 H3C-Cl + H-OH- - H3C-CH3 + CI endothermic fast Step 2 H3C-OH3 + 1 - H2C-Cl + H-CI exothermic (b) Based on this multi-step mechanism, draw a free energy reaction coordinate...
Thermodynamics Practice Problems 1. Predict the sign of AS.(positive or negative) for the following reactions a...
Thermodynamics Practice Problems 1. Predict the sign of AS.(positive or negative) for the following reactions a 2 Mg(s) +,(@) 2 Mgo (s) AS b. CH206(s) → 2C,H,OH(I) + 2003(g) AS c. 2 NH3(g) + CO2(g) → H2O(l) + NH CONH3(aq) AS d. Cu(s) (at 100°C) → Cu(s) (at 25°C) AS 2. Which two variables can indicate if a reaction is spontaneous or not? 3. The second law of thermodynamics tells us that: a Energy is conserved. b. The entropy of...
1. Consider the three reaction energy diagrams below. Make sure you can justify your answer for...
1. Consider the three reaction energy diagrams below. Make sure you can justify your answer for the purposes of Exam 3 – simply guessing on this multiple choice question will NOT help you when you're asked to explain your reasoning on the exam! energy energy energy reaction coordinate reaction coordinate reaction coordinate i) Which forward reaction do you expect to proceed fastest, assuming the same energy scale for each? ii) Which reaction do you expect to be the most favorable...
1. Consider the three reaction energy diagrams below. Make sure you can justify your answer for...
1. Consider the three reaction energy diagrams below. Make sure you can justify your answer for the purposes of Exam 3 - simply guessing on this multiple choice question will NOT help you when you're asked to explain your reasoning on the exam! energy- energy- reaction coordinate reaction coordinate reaction coordinate i) Which forward reaction do you expect to proceed fastest, assuming the same energy scale for each? ii) Which reaction do you expect to be the most favorable in...
Multiple Choice: Fill in circle on Scantron sheet with pencil. 1. Which of the following anions is the best leaving group? A. NH2 B. CI C. CH3 D. OH E.H 2. Which of the following statements is (are) true about an SN2 reaction? A. The reaction is fastest with 1° halides. B. The reaction follows second-order kinetics. C. Changing the identity of the leaving group changes the rate of the reaction. D. Statements (The reaction is fastest with 1° halides)...
41. What is the name given to the reaction species that lies at an energy minimum between steps on a reaction energy diagram? A) Transition state B) Activation energy C) Reactive intermediate D) Equilibrium product 42. Which of the following statements about a two-step reaction mechanism is true? A) The transition states are located at energy minima. B) Each step is characterized by its own value of AH and E. C) The rate-determining step has the lower energy transition state....
Multiple Choice. Bubble in the correct letter on your scantron. 1. Which point as labeled by an asterisk (*) on the following energy profile is the transition state? Energy Energy Reaction path Reaction path Energy Enery Reaction path Reaction path 2. The reaction below has a kc value of 1.0 x 1012. What is the value of Kp for this reaction at 500 K? 2 SO2(g) + O2(g) = 2 SO3(g) A) 4.2 x 10-11 B) 1.0 x 1012 C)...
SCHE 231 Chapter 6, Worksheet 1 Energy Diagrams 1. Why might it be important to understand the energy associated with a chemical reaction? What is this energy associated with? 2. Enthalpy What is Enthalpy (AH)? When is ΔΗ Positive? when is ΔΗ negative? In the diagram below, label which reaction is exothermic and which is endothermic Enthalpy 04) Enthalpy Sarting Products materials AN Starting materials Products Reaction coordinate Reaction coordnate 3. Entropy What is Entropy (AS) What contributes to entropy?...
The following reaction has a small, positive AG and takes place slowly at room temperature: 4. НС-он . нCI H3C-C , н-он (a) The mechanism for the reaction is shown below. Which bond is being broken in the slowest step? Which bond is being made? slow Hас-он; - с Н-он Step 1 H3C-C endothermic fast Step 2 H,C-он; . сг Нас-он + Н-СI exothermic (b) Based on this multi-step mechanism, draw a free energy reaction coordinate diagram for the reaction....
The following reaction has a small, positive AG and takes place slowly at room temperature: 4. H-OH H3C-OH H-CI H3C-CI (a) The mechanism for the reaction is shown below. Which bond is being broken in the slowest step? Which bond is being made? slow Hас -он; Н-Он +CI Step 1 H3C-CI endothermic fast Н-СI Hас -он +CI + Step 2 HaC-он exothermic (b) Based on this multi-step mechanism, draw a free energy reaction coordinate diagram for the reaction. Draw in...
4. The following reaction has a small, positive AG and takes place slowly at room temper H3C-Cl + H-OH - H3C-OH + H-CI (a) The mechanism for the reaction is shown below. Which bond is being broken in the sky step? Which bond is being made? slow Step 1 H3C-Cl + H-OH- - H3C-CH3 + CI endothermic fast Step 2 H3C-OH3 + 1 - H2C-Cl + H-CI exothermic (b) Based on this multi-step mechanism, draw a free energy reaction coordinate...
Thermodynamics Practice Problems 1. Predict the sign of AS.(positive or negative) for the following reactions a 2 Mg(s) +,(@) 2 Mgo (s) AS b. CH206(s) → 2C,H,OH(I) + 2003(g) AS c. 2 NH3(g) + CO2(g) → H2O(l) + NH CONH3(aq) AS d. Cu(s) (at 100°C) → Cu(s) (at 25°C) AS 2. Which two variables can indicate if a reaction is spontaneous or not? 3. The second law of thermodynamics tells us that: a Energy is conserved. b. The entropy of...
1. Consider the three reaction energy diagrams below. Make sure you can justify your answer for the purposes of Exam 3 – simply guessing on this multiple choice question will NOT help you when you're asked to explain your reasoning on the exam! energy energy energy reaction coordinate reaction coordinate reaction coordinate i) Which forward reaction do you expect to proceed fastest, assuming the same energy scale for each? ii) Which reaction do you expect to be the most favorable...
1. Consider the three reaction energy diagrams below. Make sure you can justify your answer for the purposes of Exam 3 - simply guessing on this multiple choice question will NOT help you when you're asked to explain your reasoning on the exam! energy- energy- reaction coordinate reaction coordinate reaction coordinate i) Which forward reaction do you expect to proceed fastest, assuming the same energy scale for each? ii) Which reaction do you expect to be the most favorable in...
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