The potential energy surface is shown below: Ea , reactants energy AH products reaction coordinate Is...
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.
10) Shown below is a reaction energy diagram. Answer the questions below using this diagram. Products NRG Reactants a) ( Reaction Pathway Is this reaction exothermic or endothermic? Draw on the diagram how Activation Energy (E) is measured. Draw on the diagram how the Enthalpy (AH) is measured. b) ( c) C
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...
2. Draw a labeled reaction-energy diagram (graph of potential energy versus reaction coordinate) for a three-step overall exothermic reaction with the A. first step being the rate-determining step B. third step being the rate-determining step Label each graph with the following: reactants (r), transition states (ts.), intermediates (int.), products (p). activation energies (Ea), and overall standard heat of reaction (AH). (Note: Each subscript, x, needs to be a number that refers to the appropriate primary mechanistic step. For example, Ea,...
In general, what can one say about the total potential energy in the products versus reactants for an endothermic reaction? Exothermic reaction?
(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
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
Label the energy diagrams with the following: Reactants, Products, Activation energy (include arrow) Heat absorbed or Heat released (include arrow) Potential Energy Potential Energy Reaction Progress Exothermic reaction Reaction Progress Endothermic reaction
Please Explain the Answer Question 2 (Parts A-C, 20 points): Use the energy diagrams shown below to answer parts A and B. on Products Rectants Energy Products Reactants Reaction coordinate (a) Highly exothermic reaction Reaction coordinate (b) Highly endothermic reaction A) Does the structure of the transition state in the endothermic reaction resemble that of the reactants or the products? B) Which energy diagram best represents the rate determining step of free radical bromination (Br,, light) of butane: the one...
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.