Consider the exothermic reaction AC + B → AB + C.
A Reaction coordinate Label the following according to he numbers on the figure above. Number of the arrow on the energy diagram Energy of reactants Energy of products AEreaction Ea for the forward reaction Type the correct molecular structure of the activated complex. Energy, E
Model 1 - Potential Energy Diagrams 1) The energy (enthalpy) change of a reaction can be determined by the following expression: Activated Complex Transition State AH = Energy products - Energy reactants Activation Energy, E Reactants Consider the energy change for the reaction in Model 1 (the graph to the left). Potential Energy (kJ/mol) Energy change (AH) Products a) The energy change shown is (positive/negative). b) This reaction is (endothermic / exothermic). c) These (reactants / transition state) has more...
Consider the two reaction progress diagrams below: Activated complex Activated complex Potential energy Potential energy Reaction coordinate Reaction coordinate a) Which diagram (left or right) represents an exothermic reaction? Which represents an endothermic reaction? Explain. b) Does a positive activation energy (E,> 0 always denote an endothermic reaction? Explain
2. Consider the following SNl reaction: H3 CHs CH3 CH3 i. Draw a mechanism using curved arrows. Show all step(s) involved in bond breaking& forming. ii. Draw an energy diagram. Label the axes, the reactants, products, Ea, and AH. Assume that the reaction is exothermic. ili Draw the structure of the intermediate product at the correct position in the energy diagram.
QUESTION 33 Match each arrow letter with the proper label. B C Potential Energy D A E Reaction Coordinate CH(g) + 2O5(g)-CO-(g) + 2H2O + S90,4kg 1. Potential energy of the reactants Click Save and Submit to save and submit. Click Save an Answers to save all ansers Type here to search O 994 Reaction Coordinate CH,(g) + 20g) - CO2(g) + 2H2O(0) + 890.4 kJ 1. Potential energy of the reactants Arrow A 2. Activation Energy of the forward...
A reaction profile (not to scale!) for the reaction 03 +02 02 is shown below: E (kJ) 19 03O 392 02 O2 Reaction Coordinate Which of the following are true? Choose all that apply. The energy of the products is lower than the energy of the reactants If the energy of the activated complex were increased. Ea would increase. The reaction is exothermic Δ E is positive.
(8 points) On the diagram below, label the following: Reactants, Products, Activated Complex, Activation Energy (E.), and Enthalpy of the Reaction (AH). State if the reaction is endothermic or exothermic. Explain how you arrived at your answer. 250 2001 PE Reaction pathway
for the equilibrium reaction: A + B ----> C + D delta H= -125kj draw the reaction energy diagram. Indicate the positions of the reactants, products, activated complex, Ea (37 kJ) and delta H on the diagram
For the reaction coordinate diagram shown below, which of the following statements are true? Energy Reaction Coordinate True AErxn = A-C True Reaction is endothermic False Ea(forward) = Ea(reverse) True A represents the energy of the starting materials False Ea(forward) = B-C True Eg of the forward reaction is less than Ea of the reverse reaction Remember that thermodynamic quantities are calculated by products - reactants. The activation energy can be thought of as the barrier height.
6. [Le Châtelier's Principle] Consider the following system at equilibrium: CH&(g)+2H2O(g) CO2(g)+ 4H2(g) What change shown below will cause the equilibrium to shift to form more H2? A. increase [H2] B. decrease [H2O] C. decrease the volume of the reaction vessel D. decrease [CH4] E. decrease [CO2) b) (c) (e) x Y Reaction coordinate x+ Y 2 2. Refer to the Reaction Energy Diagram above for the following question. Which statement is TRUE regarding the diagram above? A. Letter (c)...