Chemistry > Lab Experiment > Student_directions_for_Reactions_and_Rates_kinetics | Download for quality grades | (All)
Student_directions_for_Reactions_and_Rates_kinetics | Download for quality grades |
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Learning Goals: Students will be able to: Describe how the reaction coordinate can be used to predict whether a reaction will proceed including how the potential energy of the system changes. ... Describe what affects the potential energy of the particles and how that relates to the energy graph. Describe how the reaction coordinate can be used to predict whether a reaction will proceed slowly, quickly or not at all. Use the potential energy diagram to determine: o The approximate activation energy for the forward and reverse reactions. o The sign difference in energy between reactants and products. Draw a potential energy diagram from the energies of reactants and products and activation energy. Directions: 1. Talk with your group about what you think is happening on a microscopic level when the iron (III) nitrate and sodium thiocyanate mix. a. Draw pictures (in paint or sketch) that would help you describe the process. b. Name two things that might make the color change happen faster and explain your reasoning. 1)increase in heat; will speed up molecule movement more collisions 2)introduce a catalyst; effectively lowers activation energycollisions can occur with less energy c. Name two things might make more of the colored complex form and explain your reasoning. 1)increasing the number of molecules of the reactants more products can form therefore more [FeSCN]2+ 2)pull back the plunger more kinetic energy involved [Show More]
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