CHEMISTRY COMMUNITY

vannahyazon 1L

No, there isn't, but if you have a Friday discussion, you still have that class! Also! On Friday, there's still these review session: 4-5:30pm, Dr. Lavelle (Winter 2016 Final. Since it is ~3hr final I will likely cover the first half in my 90 minute review with student Q&A, discussion, etc.) 5:3...

vannahyazon 1L

I wonder if anyone in the UCLA Chem Community can confirm.

vannahyazon 1L

FOR ALL THOSE WHO'VE TAKEN 14BL/WILL TAKE IT

vannahyazon 1L

Chris_Rudewicz_3H wrote:We still get to drop our lowest quiz score, right?

Your lowest quiz score will be replaced by your highest quiz score.

So your grade for quizzes should be:

1. HIGHEST SCORE
2. HIGHEST SCORE
3. MIDDLE SCORE

vannahyazon 1L

Dr. Lavelle, Thank you for being so advocating for students. No other professor has so many office hours from himself, TA's, UA's, and PLF's. Not to mention you have Chemistry Community for anything as well. You have so many resources, and you give students no excuse. That's amazing. You truly care ...

vannahyazon 1L

204639491 wrote:Will any of the Review Sessions be Bruincasted?

2 students from lecture 1 will be recording and posting on chemistry community (:

vannahyazon 1L

Like noted above, SN2 is a single step mechanism. So if you create a one step mechanism, and the starting molecule does not look like the end molecule after that first step, then it will be electrophilic addition, because there are more steps to match the starting molecule and the end molecule. As n...

vannahyazon 1L

If we're describing catalysts and intermediates in free energy diagrams, The catalyst is not specifically drawn in the diagram, but it will decrease the activation energy. So you will draw your deltaG curve smaller than before the catalyst was put in. Intermediates are represented by the valley in b...

vannahyazon 1L

I give a second confirmation, you can use that equation as well, and many of the PLF's teach the Arrhenius Equation this way, so like the first replier stated, it's not the fault of the equations. Although, my TA did mention before we took the quiz, it's always more favorable to use the equations th...

vannahyazon 1L

Yes, the slow step takes more energy to be carried out than the fast step. If you think about the 2 step free energy diagram that we did on Quiz 3, if k1 > k2 this means that the rate is faster for k1. If the rate is faster, the activation energy is lower (deltaGdoubledagger1). But k2 is slower, so ...

vannahyazon 1L

This problem involves using the Gibbs equation, and when you plug in the values it ends up always positive.

So yes, the answer is no temperature cause that would never happen.

CHEMISTRY COMMUNITY

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Re: Lecture on Friday

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Re: Quiz 3 Winter 2017

Re: Saying Thank You to Dr. Lavelle

Re: Final Exam Details and Review Sessions Winter 2017

Re: SN2

Re: Catalyst vs. Intermediate Species

Re: Arrhenius Equation

Re: Two Step Reactions

Re: Quiz Prep #1 question #8