An energy barrier that must be overcome before a chemical reaction can proceed is known as 1. Progress of the reaction n t 100 Progress of the reaction EP 50 When the above reactions are order from slowest forward reaction to fastest forward reaction, the order would most likely be During a chemical reaction energy is During a chemical reaction, energy is + to break bonds. ◆ when bonds form. 2. + 5 Ep (kJ) n 50 Progress of the reaction + 100 Progress of the reaction +

An energy barrier that must be overcome before a chemical reaction can proceed is known as 1. Progress of the reaction n t 100 Progress of the reaction EP 50 When the above reactions are order from slowest forward reaction to fastest forward reaction, the order would most likely be During a chemical reaction energy is During a chemical reaction, energy is + to break bonds. ◆ when bonds form. 2. + 5 Ep (kJ) n 50 Progress of the reaction + 100 Progress of the reaction +

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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7.Given the reaction: N2(g) + O2(g) + 186.2 kJ <--> 2 NO(g) Which change would cause an immediate increase in the rate of the forward reaction? increasing the concentration of NO(g) increasing the concentration of N2(g) decreasing the reaction temperature decreasing the reaction pressure
The oxidation of ammonia is a reversible exothermic reaction at equilibrium that proceeds as follows: 4 NH3 (g) + 5 O2 (g) ⇋ 4 NO (g) + 6 H2O (g) If the concentration of NH3 is increased what happens to the concentration of NO?
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O 11. The decomposition of ozone in the upper atmosphere to dioxygen occurs by a two-step mechanism. The first step is a fast reversible step and the second is a slow reaction between an oxygen atom and an ozone molecule: Step 1: Step 2: O3(g) = 02(8) + O(g) O3(g) + 0(g) → 202(g) Fast, reversible, reaction Slow a. Which is the rate determining step? b. Write the rate equation for the rate-determining step. Write the rate equation for the overall reaction. с. The rate equation for the reaction of nitrogen dioxide and carbon monoxide in the gas state to form carbon dioxide and nitric oxide is represented by the equation: 12. NO2(g) + CO(g) → NO(g) + CO2(g) The following data were collected at 125°C:e Experiment 1 Experiment 2 Experiment 3 Initial [NO2] mol L 5.0 x 104 5.0 x 104 1.5 x 10-3 Initial [CO] mol L- 1.6 x 10-2 3.2 x 102 3.2 x 10-2 Initial rate mol L'min 1.7 x 10-7 1.7 x 10-7 1.5 x 10-6 What is the order with respect to NO2? b. What is the order with respect to CO? c. What is the…
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 energy of activation U -----> S free energy change U -----> S free energy change S ----> T
Removing product will O shift the reaction to the right shift the reaction to the left O have no effect cannot be determined, since the temperature is unknown 2SO2 (g) + O2(g) 2SO3 (g)
Consider the reaction 2 D(g) + 3 E(g) + F(g) → 2 G(g) + H(g). When [E] is decreasing at 0.10 mol/ L-s, how fast is [D] decreasing? (Disregard the use of any negative sign.) 0.30 mol/ L-s 0.15 mol/ L-s None of these 0.10 mol/ L-s 0.067 mol/ Ls
7. Reactions A and B were studied and found to produce the given energy diagrams. 150 150 Energy 100 (kJ/mol) 100 Energy (kJ/mol) 50 50 Reaction progress Reaction progress Reaction A Reaction B A third reaction, C was studied with a measured activation energy of 55 KJ/mol. Assume all reactions take place at the same temperature. Reaction A is slowest a. b. Reaction B is slowest c. Reaction C is slowest d. All reactions happen at the same rate.
⦁ 4. Make your own energy diagram for an exothermic reaction that does not include a catalyst and one with a catalyst (Be sure each line is a different color or labeled). Label the axis of the diagram. Then, state what a catalyst is and how a catalyst affects the reaction rate.
Which of the following will decrease the activation energy, Ea, of a reaction? O Increasing the reactant concentrations Removing the products as they form O Increasing the temperature O Adding a catalyst O Decreasing the pressure A Moving to another question will save this response. M esc 20 F3 F1 F2 F4 F5 @ #3 24 4 Q W R. A
Energy (kJ/mol) Select the most appropriate reaction coordinate diagram for this reaction from the graphs shown below: Energy (kJ/mol) 10 a Ob C d 15 20 A Energy (kJ/mol) 25 B 20 15 10 0 0 Reaction Coordinate Reaction Coordinate 25 20 C 15 16 14 10 Energy (kJ/mol) D 12 10 0 Reaction Coordinate Reaction Coordinate The reason that this graph is the best choice is the highest rate constant goes with the second step and the reaction is exothermic the highest rate constant goes with the first step and the reaction is endothermic the highest rate constant goes with the first step and the reaction is exothermic the highest rate constant goes with the second step and the reaction is endothermic In order to speed up the reaction, the team should decrease the temperature of the soap solution increase the temperature of the soap solution keep the temperature of the soap solution the same because the reaction is endothermic the reaction is exothermic the hydrogen peroxide molecules will have…
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