Chemistry: The Central Science, Books a la Carte Plus MasteringChemistry with eText -- Access Card Package (13th Edition)
13th Edition
ISBN: 9780321934826
Author: Theodore E. Brown, H. Eugene LeMay, Bruce E. Bursten, Catherine Murphy, Patrick Woodward, Matthew E. Stoltzfus
Publisher: PEARSON
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Textbook Question
Chapter 22, Problem 22E
The following graph shows two different reaction pathways for the same overall reaction at the same temperature. Is each of the following statements true or false? (a) The rate is faster for the red path than for the blue path. (b) For both paths, the rate of the reverse reaction is slower than the rate of the forward reaction. (c) The energy change ΔE is the same for both paths. [Section 14.6]
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2a) explain the difference between the net energy change of a reaction and the activation energy of the same reaction
In the following chemical reaction
A + B → 2C + 40KJ
at a certain temperature, if you know that the potential energy of the reactants is 80 kilojoules, and the potential energy of the activated complex is 160 kilojoules, and when a catalyst is added, the activation energy for the forward reaction becomes 50 kilojoules,
a. What is the value of the activation energy for a reverse reaction in kilojoules in the presence of the catalyst? And without the catalyst?
b. What is the value of the potential energy (in kilojoules) of the products of a chemical reaction?
c. What is the value of the activated Complex potential energy (in kilojoules) in the presence of the catalyst?
7.For a chemical reaction, the activation energy for the forward reaction is +181 kJ and the activation energyfor the backward reaction is +62 kJ. What is the overall energy change for the forward reaction?a. –119 kJb. –62 kJc. +119 kJd. +181 kJe. +243 kJ
Chapter 22 Solutions
Chemistry: The Central Science, Books a la Carte Plus MasteringChemistry with eText -- Access Card Package (13th Edition)
Ch. 22.1 - Prob. 21.1.1PECh. 22.1 - Prob. 21.1.2PECh. 22.1 - Prob. 21.2.1PECh. 22.1 - Prob. 21.2.2PECh. 22.3 - At 25 ° C, the decomposition of dinitrogen...Ch. 22.3 - Practice Exercise 2 The decomposition of dimethyl...Ch. 22.4 - Practice Exercise 1 For a certain reaction A ...Ch. 22.4 - Prob. 21.4.2PECh. 22.7 - Prob. 21.7.1PECh. 22.7 - Prob. 21.7.2PE
Ch. 22.10 - Prob. 21.10.1PECh. 22.10 - Prob. 21.10.2PECh. 22.10 - Prob. 21.7.1PECh. 22.10 - Prob. 21.7.2PECh. 22 - Prob. 1DECh. 22 - Prob. 1ECh. 22 - Prob. 2ECh. 22 - Prob. 3ECh. 22 - Prob. 4ECh. 22 - The gas-phase reaction CL (g) + HBr (g) + HCl (g)...Ch. 22 - What is the molecularity of each of the following...Ch. 22 - Prob. 7ECh. 22 - Prob. 8ECh. 22 - Cyclopentadiene (C5H6) reacts with itself to form...Ch. 22 - Practice Exercise 1 An Alternative two-step...Ch. 22 - Prob. 11ECh. 22 - Practice Exercise 1
Consider the...Ch. 22 - Prob. 13ECh. 22 - Prob. 14ECh. 22 - Prob. 15ECh. 22 - Prob. 16ECh. 22 - You study the rate of a reaction, measuring both...Ch. 22 - Suppose that for the reaction K+L M, you monitor...Ch. 22 - Prob. 19ECh. 22 - Prob. 20ECh. 22 - Prob. 21ECh. 22 - The following graph shows two different reaction...Ch. 22 - Prob. 23ECh. 22 - Prob. 24ECh. 22 - Prob. 25ECh. 22 - Prob. 26ECh. 22 - Prob. 27ECh. 22 - Prob. 28ECh. 22 - Prob. 29ECh. 22 - Prob. 30ECh. 22 - Prob. 31ECh. 22 - Prob. 32ECh. 22 - Prob. 33ECh. 22 - Prob. 34ECh. 22 - Prob. 35ECh. 22 - Prob. 36ECh. 22 - Prob. 37ECh. 22 - Prob. 38ECh. 22 - Prob. 39ECh. 22 - Prob. 40ECh. 22 - Prob. 41ECh. 22 - Prob. 42ECh. 22 - Prob. 43ECh. 22 - Prob. 44ECh. 22 - Prob. 45ECh. 22 - Prob. 46ECh. 22 - Prob. 47ECh. 22 - Prob. 48ECh. 22 - Prob. 49ECh. 22 - Prob. 50ECh. 22 - Prob. 51ECh. 22 - Prob. 52ECh. 22 - Prob. 53ECh. 22 - Prob. 54ECh. 22 - Prob. 55ECh. 22 - Prob. 56ECh. 22 - Prob. 57ECh. 22 - Prob. 58ECh. 22 - Prob. 59ECh. 22 - Prob. 60ECh. 22 - Prob. 61ECh. 22 - Prob. 62ECh. 22 - Prob. 63ECh. 22 - Prob. 64ECh. 22 - Prob. 65ECh. 22 - Prob. 66ECh. 22 - Prob. 67ECh. 22 - Prob. 68ECh. 22 - Prob. 69ECh. 22 - Prob. 70ECh. 22 - Prob. 71ECh. 22 - Prob. 72ECh. 22 - Prob. 73ECh. 22 - Prob. 74ECh. 22 - Prob. 75ECh. 22 - Prob. 76ECh. 22 - Prob. 77ECh. 22 - Prob. 78ECh. 22 - Prob. 79ECh. 22 - Prob. 80ECh. 22 - Prob. 81AECh. 22 - Prob. 82AECh. 22 - Prob. 83AECh. 22 - Prob. 84AECh. 22 - Prob. 85AECh. 22 - Prob. 86AECh. 22 - Prob. 87AECh. 22 - Prob. 88AECh. 22 - Prob. 89AECh. 22 - Prob. 90AECh. 22 - Prob. 91AECh. 22 - Prob. 92IECh. 22 - Prob. 93IECh. 22 - Prob. 94IECh. 22 - Prob. 95IECh. 22 - Prob. 96IECh. 22 - Prob. 97IECh. 22 - Prob. 98IECh. 22 - Prob. 99IECh. 22 - Prob. 100IECh. 22 - Prob. 101IECh. 22 - Prob. 102IECh. 22 - Prob. 103IECh. 22 - Prob. 104IECh. 22 - Prob. 105IECh. 22 - Prob. 106IECh. 22 - Prob. 107IE
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- . What does the activation energy for a reaction represent? How is the activation energy related to whether a collision between molecules is successful?arrow_forward(a) Explain the following terms :(i) Order of a reaction(ii) Molecularity of a reaction(b) The rate of a reaction increases four times when the temperature changes from 300 K to 320 K. Calculate the energy of activation of the reaction, assuming that it does not change with temperature. (R = 8.314 J K-1 mol-1)arrow_forwardWhich of the following does not affect the rate of a chemical reaction? Group of answer choices A) The equilibrium constant of the reaction. B) The concentration of reactants unless the reaction is zero-order to any reactant. C) The temperature. D) The activation energy of the reaction. E) The presence of a catalyst.arrow_forward
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- Given the Equation: 2C(g) + 2D(g) = 3E(g) + F(g) + heat ,Predict the direction of the shift in equilibrium, Addition of a catalyst.a. forwardb. backwardc. no changeMost reactions are carried out in liquid solution or in the gaseous phase because in such situationsa. Activation energies are higher.b. It is easier for reactants to come in contact with each other.c. Kinetic energies of reactants are lower.d. Products are less apt to decompose. Whether a reaction is exothermic or endothermic is determined bya. the activation energyb. the physical state of the reactantsc. how reactant and product potential energies compared. whether a catalyst is presente. None Which of the following changes is most likely to decrease reaction rate for the chemical reaction 2CO + O2 ---> 2CO2?a. adding twice as much O2 to the reaction mixtureb. tripling the temperature of the reaction mixturec. adding a catalyst to the reaction mixtured. removing some CO from the reaction mixturee. Nonearrow_forwardDefine the following terms.(i) Rate constant (k) (ii) Activation energy ( Ea)arrow_forwardIf reaction A has an activation energy of 250 kJ/mol and reaction B has an activation energy of 100 kJ/mol, which of the following statements must be correct? If reaction A is exothermic and reaction B is endothermic then reaction A is favored kinetically. The energy of reaction B must be greater than the energy of reaction A. At the same temperature the rate of reaction B is greater than the rate of reaction A. The rate of reaction A at 25 °C equals the rate of reaction B at 100 °C. The energy of reaction A must be greater than the energy of reaction B.arrow_forward
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