Draw a Potential Energy Curve for this Reaction (Given Mechanism)

Draw a Potential Energy Curve for this Reaction (Given Mechanism) including activation energies of forward and reverse reactions, enthalpy change (delta H), transition states, intermediates, and axes labels.
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[@jasonli1060]

I think this is misleading. By the Arrhenius equation, it is provided that k = Ae^(-E/RT) where E is the activation energy and k is the reaction constant. That means that the larger the activation energy is, the smaller the reaction constant and thus, the slower the elementary reaction(individual steps). This indicates that slower elementary steps have higher activation energies, so the last step drawn in the video was actually the slowest of all three elementary reactions provided.

[@zmrosenzweig]

I am just a student but doesn't the slow step have the largest activation energy, not the highest energy level? Your third step has a much higher activation energy than the first step which you called the slow step. The activation energy is what determines the rate determining step, not the overall highest energy level, correct?

[@luker.6967]

Yes. I think he meant to draw the third hump bigger than the second but smaller than the first.

[@vaddadisreevamsi947]

@@luker.6967 No , the catch is the step with highest activation energy isn't the rate -determining step, Rather the step with the highest transition energy is the rate-determing step.

[@tasalabarakzai9773]

OH MY THANK YOU SOO MUCH 😍

[@apexgamer1288]

Why is the 3rd hump higher than 2nd one

[@twoezy-vegito5363]

Hello Nate,
why isnt the 3rd step the slowest step if the Activation energy from the 2nd intermediate up to the 2nd Activation energy is the largest change in PE?

[@moshariff6320]

TwoEzy- VEGITO exactly

[@jadentran9895]

is this exothermic or endothermic? how do you draw a reaction coordinate diagram that is 3 step mechanism, first step is rate determining, and exothermic overall?

[@rprojects8162]

my understanding is because the change in enthalpy is negative, (-100 kJ), this means the reaction is releasing energy, this energy is released in a variety of ways but mostly heat, so the reaction is thus exothermic

[@ajjaber7905]

What if the delta H is not given? How do you find out if it's an exothermic vs endothermic reaction?

[@tasalabarakzai9773]

AJ Jaber most likely you’ll be given the equation and you use Hess law equation to figure out delta H
If your delta H is a negative it is exothermic and if it is positive it is endothermic!

[@angieangie4419]

If they don't give you delta H, then you have to look at the diagram and where the reactants vs the products are, when its exothermic the reactants are at a higher point than the products,(b/c there was a release of energy) like in the video. When its endothermic the reactants are at the lower point and the products are at a higher point.(b/c energy was absorbed) this link has both graphs together, : www.khanacademy.org/test-prep/mcat/chemical-processes/thermochemistry/a/endothermic-vs-exothermic-reactions u gotta scroll down a bit tho.

[@dinarazat2255]

BLESS YOU

[@danpireocean4802]

Love the Enthusiasm 0_0

[@ashaprajapati7073]

Why is this curve not linear??

[@neetisoni2713]

Thanks sir

[@fms4197]

Amazing Amazing

[@rprojects8162]

sick video tyty

[@user-bm3hk7by2h]

Thanks

[@Gennypup7]

So wait, why don't any of the B's cancel out?

[@chemistNATE]

They are all on the reactant (left) side. "Cancelling" here means you need one of them to be on the reactant side and one of them to be on the product (right) side.

[@anjaniyadav5432]

What is actvationenergy

[@jontlchiu]

Thanks Nate, I use many of your videoes tutor my 12 years old nephew.

[@xXMissAnimeLOVERXx]

梵天丸 Damm he 12 years old doing university chem already?

[@agrimpuriya2585]

@@xXMissAnimeLOVERXx Chinese

[@williamqiu6538]

D cancels with D,,,k