Worksheet 39 Potential Energy Diagrams Answer Key Name Potential Energy Diagrams Class Date ed Answer the questions bv referring to the diagram of the potential energy of o reaction b c a
Sketch a potential energy diagram for a general reaction A B Given that Hreverse 10 kJ and Ea forward 40 kJ C D 4 3 Energy Diagrams Practice Questions Answers 1 Answer the following questions based on the potential energy diagram shown here g Does the graph represent an endothermic or Ws 4 Potential Energy Diagrams Worksheet 1 Draw the PE diagram showing the PE changes that occur during a successful collision of Draw the potential energy diagram for the following reactions 9 Potential energy of reactants 200 kJ Potential Energy of activated complex 400 kJ 10 15 2018 11 56 39 AM
Worksheet 39 Potential Energy Diagrams Answer Key
Worksheet 39 Potential Energy Diagrams Answer Key
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To find the equilibrium points we solve the equation dU dx 8x3 4x 0 8 5 10 and find x 0 and x x Q where x Q 1 2 0 707 meters The second derivative d2U dx2 24x2 4 8 5 11 is negative at x 0 so that position is a relative maximum and the equilibrium there is unstable Potential energy PE is the capacity or potential of an object to do work An object acquires this type of force when it is in a position to either move or do some work As soon as the movement starts the PE changes form PE depends on an object s position relative to other things and the forces they exert on each other
Potential energy is known as stored energy x It is energy that could cause changes in the future x Potential energy often changes into kinetic energy Example Answer Key Examples of kinetic energy x Swinging a bat x A speeding car chase x Sliding down a hill on a sled x A falling deck of cards x Spinning in circles x Increase concentration by distillation of a solvent Increase concentration by increasing pressure of a gas Increase temp Add a catalyst Add an inhibitor 6 Draw an energy diagram for a reaction Label the axis PE of reactants 350 KJ mol Ea 100 KJ mol PE of products 250 KJ mol 7
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Which lettered interval on the diagram represents the potential energy of the products 1 A 2 B 3 C 4 D 12 In the potential energy diagram which letters represent the activation energy of the forward and reverse reactions respectively 1 A and C 2 A and D 3 B and C 4 B and D 13 The potential energy diagram shows the reaction X Y A potential energy diagram also known as a reaction progress curve is a visual representation of the energy changes that take place during a chemical reaction A diagram of potential energy illustrates how a system s potential energy changes as reactants are converted into products There are potential energy diagrams for endothermic and exothermic reactions
The energy changes involved in chemical reactions can be conveniently examined using potential energy diagrams The total potential energy of all the reactants in the reaction is illustrated at the left of the diagram the total potential energy of the products is at the right side and the activation energy change or changes are illustrated in 1 Answer the following questions based on the potential energy diagram shown here a Does the graph represent an endothermic or exothermic reaction b Label the postion of the reactants products and activated complex c Determine the heat of reaction H enthalpy change for this reaction d Determine the activation energy Ea for
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Worksheet 39 Potential Energy Diagrams Answer Key - Potential energy PE is the capacity or potential of an object to do work An object acquires this type of force when it is in a position to either move or do some work As soon as the movement starts the PE changes form PE depends on an object s position relative to other things and the forces they exert on each other