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Which of the following not FTC about the energy diagram shown nere?50 3 30 20 10reaction pathwaySelect one: The reaction is exathermicThe energy of the reaction is ...

Question

Which of the following not FTC about the energy diagram shown nere?50 3 30 20 10reaction pathwaySelect one: The reaction is exathermicThe energy of the reaction is +20 kcaljmolY represents the transition staterepresents the productsrepresents the reactantsThe activation energy is 30 kcalimol

Which of the following not FTC about the energy diagram shown nere? 50 3 30 20 10 reaction pathway Select one: The reaction is exathermic The energy of the reaction is +20 kcaljmol Y represents the transition state represents the products represents the reactants The activation energy is 30 kcalimol



Answers

Consider the following activation energy diagram. Which of the following statements about the diagram are true? (a) $E_{\mathrm{a}}$ (forward) $<E_{\mathrm{a}}$ (reverse) (b) $B$ represents the activation energy of the forward reaction. (c) Energy $(\Delta H)$ for the reaction is $A-C$. (d) $E_{\mathrm{a}}($ forward $)=\mathrm{B}-\mathrm{A}$ (e) $E_{\mathrm{a}}($ forward $)=E_{\mathrm{a}}$ (reverse) $-\mathrm{C}$

Okay, so for this reaction, you're given the following reaction coordinate diagram. Uh I apologize. It's not drawn as nicely as it's in the book. And but from this, you want to answer a few questions. So the first one, in part a asks you how many intermediates there are. So remember that intermediates are going to be at the bottom of the well. So you have A is going to be your reactant, D. Is your products, B would be intermediate one and see would be intermediate two. So in this one you would have to intermediates which are I one and I too, or rather B and C. For the number of transition states, you're looking at these structures here. So you have delta G one, delta G, double dagger, two delta G three, double dagger. So in this case you have three transition states which are delta G double diaper. In this reaction, your fastest step is going to have your lowest transition state energy. And so when you measure this, you want to look at the difference in energy between the reaction in the transition state, right? So if you go from here to hear and then here to here. So your fastest step is going to be your smallest free energy of activation, which is going to be step C to D. For part D. You want to look at whether A. Or D. Is going to be more stable. So if we say that We set some type of zero point energy. Now you can see that A is higher in energy than D. So if something is more stable it has a lower energy, so D is going to be more stable. We just move this down a little bit. The next question wants to know the rate determining step and what is going to be the reactant of the rate determining step. And so your rate determining step is going to be your largest delta G. Now this isn't drawn as nicely as in the book, um but if you look delta G two, so your RDS is going to be, you're this delta G double dagger to the structure here. Um So it asks for the reaction of the rate determining step. So that would be be right. And then lastly, you want to look at overall energies. So your first step wants to know if you're going to be end organic or X organic. So remember the end organic versus X organic, You're talking about till two G. So if something's undergone it, delta G is going to be greater than zero. And if it's extra granic, delta G is going to be less than zero. So if you look at your first step where you're going from A to B, this overall changing energy is positive, so B has a higher energy than A. So B minus A is going to be greater than zero, so you're going to be and organic. However, if you look at your overall reaction, so your first step is from A to B. Your overall reaction is going from A. Just need this down a little bit. Your overall reaction is going from A to D. So because A going from A to D. You go down in energy, so D is lower in energy, your overall delta G is going to be less than zero. So you're going to be extra guards.

Yeah. In this problem we have given this activist energy diagram and we have to find out true statements about this diagram here. This energy is indicated by sea. This is B. And this is gay. Now. With the help of given diagram we find out activists and energy for forward reaction. Okay. Mhm. E forward is this an activation energy for reverse reaction? Is this right? Yeah. No. Mhm. From the graph activists, energy for forward reaction is equal to b minus A. Where is energy of reacting and B. S. Energy or product? Yes. Yeah. Okay this is yeah. Yeah. Oh be indicated energy of products activism and E. For diverse reaction is equal to B minus C. Which is this value And activist energy for forever. Jackson, is this family here B minus A. Is greater than B minus C. Therefore activists energy for forward reaction is greater than activists. Energy for reverse reaction. Mhm. Mhm. We know that. Mhm. Yeah. In the help of reaction senses Mhm. Mhm denoted by dale ties is equal to activists. Energy for forward reaction minus activation energy four reverse reaction which is equal to b minus a minus b minus C. So they get b minus a minus B plus C which is equal to c minus. Mhm. Oh the Cindy here's delta H. That's so what? So yeah. Following statements this mhm are true about. Mhm. The given diagram statement B. Mhm. Mhm A represents the energy of the the obtains Okay, 40 kiss me forward reaction. Uh huh She said Yeah. Okay. And the statement is also true. That is activist energy for forward reaction is equal to B minus a. Oh, this is our answer for this problem.

For this question, we have an energy diagram for a particular reaction, we show that the potential energy increases as the reaction progresses and then decreases to a lower state. The reactant are at the beginning, at this particular energy value, the products are at a lower energy value. The energy in order to get up the hill to initiate the reaction is activation energy, and the energy difference between the reactant and the products is delta H. For the reaction right at the top of the hill, we have the transition state where the reactant are transitioning into the products. The reaction is extra thermic because the products are lower in energy than the reactant. The only way this can occur is if energy is released, which is what defines an exile thermic reaction, A catalyst reaction would look exactly the same. The activation energy would just be lower.

Okay. Show problem. 59 were given this reaction diagram and were just asked to label these four things. So our reaction progresses from left to right. So meaning we're starting with our reactant on the left. And we're ending with our products on the right side. Okay, so, um, part a would be reactant in. As I've mentioned, we'll be starting, of course, with our reactant so that A is going to be in this box at the very left. And we're ending with products, which means, um, part B products would be this box right here on the very right. So now what we have are these to energy, um, energy gaps, or I don't know what to call them, but, um, we've got this space is right. And part c. Activision Energy again is, um, activation energies. That barrier that you reactant need to overcome right in order to become products. So pass you would. No, it is. These reactions need to overcome this big hump before they finally get to the products. So, um, by that reasoning, um, this whole area right here would be your activation energy. So that means this very last, um, spot or box would be your and GOP or dealt the h of reaction. Be right. So that's age of reaction is just the difference in energy between your reactions and your product, So s you could see this would be the energy level. So here. Sure. You're sure? Reactant right. So that energy level would be on this black dotted line, right? And your energy level for your products is down right here. So that their friends the difference between the energies of the reactant and products this hour and therapy.


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