14:10x+T /1. Define the term activation energy2. Study the graph below of a reactionTime (1)2.1. Calculate the activation energy for the reaction.A catalyst is now used in the same reaction.2.2. Define the term catalyst2.3. How will the activation energy of the catalysed reaction compare to the activationenergy of the un-catalysed reaction? Write only GREATER THAN, LESS THANor SAME2.4. Hence draw the graph of the un-catalysed reaction and the catalysed reaction on thesame set of axes. Indicate clearly which graph is for the un-catalysed and whichgraph is for the catalysed reaction3. Study the graph below to answer the questions that follow:Kinetic energy of particle (KE)Which graph (blue or green) shows the reaction in which a catalyst was used?Give a reason for your answer.■4. Learners conducted an investigation on the decomposition of hydrogen peroxide. Theyused 50cm³ of 0, Imol.dm hydrogen peroxide in both experiments. In one experimentthey used CuO as catalyst, while in another experiment they did not use a catalyst. Thetable below shows the results of the two experimentsExperiment Volume of oxygenTime taken to produceoxygenproduced(dm³)(s)0.210110.254.1. In which reaction (I or II) was CuO used? Give a reason for your answer4.2. Calculate the rate of the catalysed reaction.Add a caption...> Status (Custom) 14:10X++T/Provide answers to the following questions from the learningactivity:3.3.1 2.23.3.2 2.33.3.3 33.3.4 4.13.3.5 4.2Add a caption...> Status (Custom)3.3

Activation energy is defined as the minimum amount of energy that is required by the substituents to…

1. Define the term activation energy 2. Study the graph below of a reaction 121 2.1. Calculate the activation energy for the reaction. A catalyst is now used in the same reaction. 2.2. Define the term catalyst 2.3. How will the activation energy of the catalysed reaction compare to the activation energy of the un-catalysed reaction? Write only GREATER THAN, LESS THAN or SAME 2.4. Hence draw the graph of the un-catalysed reaction and the catalysed reaction on the same set of axes. Indicate clearly which graph is for the un-catalysed and which graph is for the catalysed reaction 2) Ban 1.

1. Define the term activation energy 2. Study the graph below of a reaction 121 2.1. Calculate the activation energy for the reaction. A catalyst is now used in the same reaction. 2.2. Define the term catalyst 2.3. How will the activation energy of the catalysed reaction compare to the activation energy of the un-catalysed reaction? Write only GREATER THAN, LESS THAN or SAME 2.4. Hence draw the graph of the un-catalysed reaction and the catalysed reaction on the same set of axes. Indicate clearly which graph is for the un-catalysed and which graph is for the catalysed reaction 2) Ban 1.

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter17: Equilibrium

Section: Chapter Questions

Problem 9CR

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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?
Can a reaction mechanism ever be proven correct? Can it be proven incorrect?
. Account for the increase in reaction rate brought about by a catalyst.
If a textbook defined a catalyst as "a substance that increases the rate of a reaction," would that definition be adequate?
The reaction NO(g) + O,(g) — NO,(g) + 0(g) plays a role in the formation of nitrogen dioxide in automobile engines. Suppose that a series of experiments measured the rate of this reaction at 500 K and produced the following data; [NO] (mol L ’) [OJ (mol L 1) Rate = -A[NO]/Af (mol L_1 s-1) 0.002 0.005 8.0 X 10"'7 0.002 0.010 1.6 X 10-'6 0.006 0.005 2.4 X IO-'6 Derive a rate law for the reaction and determine the value of the rate constant.
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How do chemists envision reactions taking place in terms of the collision model for reactions? Give an example of a simple reaction and how you might envision the reaction’s taking place by means of a collision between the molecules.
Use the PhET Reactions Single collision tab of the simulation applet, enable the Energy view" by clicking the + icon. Select the first A+BCAB+C reaction (A is yellow, B is purple. and C is navy blue). Using the angled shut option, try launching the A atom with varying angles, but with more Total energy than the transition state. What happens when the A atom hits the BC molecule from different directions? Why?