final exam question

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Dahriel Aron 3A
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Joined: Fri Sep 25, 2015 3:00 am

final exam question

Postby Dahriel Aron 3A » Tue Mar 08, 2016 2:46 pm

Hello,
I noticed in the practice finals there are a few questions that ask you to derive rate laws using integrals such as 4A on the 2014 final which asks to derive the integrated rate law for a second order reaction with A as the only reactant. However, I thought that I remembered Professor Lavelle stating that we will not have to derive any rate laws in the tests. I may be mistaken on that, but I was just wondering if it will be worth while in review for the final to practice questions like these that derive rate laws

Chem_Mod
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Re: final exam question

Postby Chem_Mod » Tue Mar 08, 2016 7:49 pm

Anything I covered in class can be asked.
I derived several equations and rates law and discussed that I do this to assist with understanding where equations come from, and then how to use them. My focus in doing this is to provide greater understanding. Most exam questions focus on how to use the equations versus how to derive them. But knowing where the equations come from provides a foundation. Hope this helps.

Akodjanian
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Joined: Mon Jan 26, 2015 2:17 pm

Re: final exam question

Postby Akodjanian » Thu Mar 10, 2016 12:37 am

Adding on to rate formulas that can be derived, is there one concrete way of deriving them or do they all have a specific method for each one. For example a zero order reaction should be derived differently from a second order reaction.

Chem_Mod
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Re: final exam question

Postby Chem_Mod » Thu Mar 10, 2016 10:36 am

Akodjanian wrote:Adding on to rate formulas that can be derived, is there one concrete way of deriving them or do they all have a specific method for each one. For example a zero order reaction should be derived differently from a second order reaction.


They are all derived the same way, as done in class:
Write the differential rate law.
Separate the variables.
Integrate both sides.
Find the y axis intercept.
Write the final linear equation.

See my lecture notes in the course reader and my lecture online.

004569922
Posts: 11
Joined: Fri Sep 25, 2015 3:00 am

Re: final exam question

Postby 004569922 » Fri Mar 11, 2016 1:35 am

Will we be required on the final to know the torsional strain values of each conformation type?

Pianissimo 1K
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Re: final exam question

Postby Pianissimo 1K » Fri Mar 11, 2016 8:56 pm

The final will cover Newman projection or diagram?

Ilya Alter 3J
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Joined: Sat Nov 14, 2015 3:00 am

Re: final exam question

Postby Ilya Alter 3J » Sat Mar 12, 2016 12:10 am

Pianissimo 1K wrote:The final will cover Newman projection or diagram?


From the looks of old exams Im pretty sure they could be on there, there was a couple on the old exams

004569922
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Joined: Fri Sep 25, 2015 3:00 am

Re: final exam question

Postby 004569922 » Sat Mar 12, 2016 1:13 am

Are esters going to be on the final exam?

Chem_Mod
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Re: final exam question

Postby Chem_Mod » Sat Mar 12, 2016 6:50 am

004569922 wrote:Will we be required on the final to know the torsional strain values of each conformation type?


Not the values.

Chem_Mod
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Re: final exam question

Postby Chem_Mod » Sat Mar 12, 2016 6:50 am

Pianissimo 1K wrote:The final will cover Newman projection or diagram?

Yes

Chem_Mod
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Re: final exam question

Postby Chem_Mod » Sat Mar 12, 2016 6:51 am

004569922 wrote:Are esters going to be on the final exam?

No

204643191
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Joined: Fri Sep 25, 2015 3:00 am

Re: final exam question

Postby 204643191 » Sat Mar 12, 2016 9:32 am

Pianissimo 1K wrote:The final will cover Newman projection or diagram?


Is there a difference between the projection or diagram, or are they just the same thing, different names?

Daniel Hemming 2A
Posts: 10
Joined: Fri Sep 25, 2015 3:00 am

Re: final exam question

Postby Daniel Hemming 2A » Sun Mar 13, 2016 2:18 pm

Newman projections and diagrams are the same thing.


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