Consider the Energy diagram below. What does the variable "E"indicate?TS 2ETS 1ergyUReaction Progressenergy of activation S -----> Tenergy of activation U-----> Sfree energy change U-----> Sfree energy change S ----> T

For every reaction energy profile diagram tells about the energy associated with any species…

Answered: Consider the Energy diagram below. What…

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter12: Chemical Kinetics

Section: Chapter Questions

Problem 63AE: For the following reaction profile, indicate a. the positions of reactants and products. b. the...

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Describe how graphical methods can be used to determine the activation energy of a reaction from a series of data that includes the rate of reaction at varying temperatures.
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For a certain reaction, Ea is 135 kJ and H=45 kJ. In the presence of a catalyst, the activation energy is 39% of that for the uncatalyzed reaction. Draw a diagram similar to Figure 11.14 but instead of showing two activated complexes (two humps) show only one activated complex (i.e., only one hump) for the reaction. What is the activation energy of the uncatalyzed reverse reaction?
For the following two reactions H+Cl2HCl+Cl H+Br2HBr+Br the first reaction has a lower value of A than the second reaction. What can one say about the relative properties of the intermediates HCl2 and HBr2, just from the relative values of A?
. Suppose a reaction has the equilibrium constant K=1.7108at a particular temperature. Will there be a large or small amount of unreacted starting material present when this reaction reaches equilibrium? Is this reaction likely to be a good source of products at this temperature?
The following experimental data were obtained for the reaction of \'I14* and NOf in acidic solution. NH/(aq) + NO2-(aq) — N;(g) + 2 H,O(f) INH/I (mol L1) [NO21 (mol L-1, Rate = A[NJ/At (mol L-1 s’) 0.0092 0.098 3.33 X IO"7 0.0092 0.049 1.66 X 10‘7 0.0488 0.196 3.51 X 10"6 0.0249 0.196 1.80 X 10-6 Determine the rate law for this reaction and calculate the rate constant.
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The rate of a certain reaction doubles for every 10 C rise in temperature. (a) How much faster does the reaction proceed at 45 C than at 25 C? (b) How much faster does the reaction proceed at 95 C than at 25 C?
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Substances that poison a catalyst pose a major concern for many engineering designs, including those for catalytic converters. One design option is to add materials that react with potential poisons before they reach the catalyst. Among the commonly encountered catalyst poisons are silicon and phosphorus, which typically form phosphate or silicate ions in the oxidizing environment of an engine. Group 2 elements are added to the catalyst to react with these contaminants before they reach the working portion of the catalytic converter. If estimates show that a catalytic converter will be exposed to 625 g of silicon during its lifetime, what mass of beryllium would need to be included in the design?
Activated complex 200- 180 Potential Energy 100 Reactars 80 Products Reaction Pathway The heat of the reaction (AH)is is and the potential energy of the product 100; -150 O-200;-150 200 50 100:50
20. Which items correctly complete the following statment? A catalyst can act in a chemical reaction to: (1) increase the equilibrium constant. (II) lower the activation energy. (III) decrease AE for the reaction. (IV) provide a new path for the reaction. (a) only I & II (b) only II & III (c) only III & IV (d) only I & II (e) only II & IV

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Consider the Energy diagram below. What does the variable "E" indicate? TS 2 E TS 1 e r g y U Reaction Progress energy of activation S ----->T