equation derivations

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Payton Kammerer 2B
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equation derivations

Postby Payton Kammerer 2B » Sun Mar 08, 2020 11:41 pm

Are we ever going to be asked to replicate the derivation of an equation on an exam? Some of the derivations in this section were confusing, and if I can just memorize the equation I need and get full points, it would be really helpful for me.

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Re: equation derivations

Postby Brian_Ho_2B » Mon Mar 09, 2020 8:29 am

Although unlikely that something like that would appear on an exam, it is in fact a learning objective that you do know how to derive the integrated rate law equations and the half life equations. If you do need help with the math part of it, as you know there are math assistance resources on Prof. Lavelle's website. The specific method we use to derive the integrated rate laws is solving a basic differential equation with integration, and we use algebra to derive the half life equations (set [A] = 0.5[Ao] and solve for "t").

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Re: equation derivations

Postby Christineg1G » Mon Mar 09, 2020 8:53 am

I don't think that we will be asked to know how to derive the different equations given in this unit, but it is important and helpful to see the steps that it takes to get to a specific equation.

Luc Zelissen 1K
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Joined: Mon Jun 17, 2019 7:23 am

Re: equation derivations

Postby Luc Zelissen 1K » Thu Mar 12, 2020 10:31 am

I wouldnt be surprised to see a derivation on the exam. Some of the UAs had a derivation problem on their second test last year. Also lavelle specifically went through the derivations in class, so we should probably know how to do it.

Tanmay Singhal 1H
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Re: equation derivations

Postby Tanmay Singhal 1H » Thu Mar 12, 2020 12:50 pm

there might be but the final is open book so.....

Alfred Barrion 2H
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Re: equation derivations

Postby Alfred Barrion 2H » Thu Mar 12, 2020 1:43 pm

We wouldn't necessarily use the derivations on the exam, but knowing how the derivation occurs and how it leads to a specific equation would be valuable in decoding a certain question.

Keya Jonnalagadda 1A
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Joined: Mon Jun 17, 2019 7:24 am

Re: equation derivations

Postby Keya Jonnalagadda 1A » Thu Mar 12, 2020 1:56 pm

The derivations for integrated rate law will be useful to know, as well as the equations to find the rate constant or activation energy at different temperatures. We can just look in our notes for the last two lectures for the important derivations.

Brandi 2C
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Re: equation derivations

Postby Brandi 2C » Thu Mar 12, 2020 2:10 pm

My TA told us that we should memorize the derivation for van't Hoff equation... He strongly suggested us to, so I am still not sure why would need to but I would follow his recommendation

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Re: equation derivations

Postby ShravanPatel2B » Thu Mar 12, 2020 2:14 pm

Definitely understand how to derive the equations as it aids in understanding their function and just to visualize how the different components interact with each other. This can aid with conceptual questions as well as solving questions.

Christine Honda 2I
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Re: equation derivations

Postby Christine Honda 2I » Thu Mar 12, 2020 3:07 pm

I know that on a previous test they were asked to derive Van't Hoff's equation! But it is always useful to understand derivations so you know how to apply the equation.

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