CHEMISTRY COMMUNITY

AlyssaD_2K

I think that the E and Z are referring to the methyl groups and which side of the double bond they are on in relation to each other. For E, the methyl groups are on the opposite side, and for Z, the methyl groups are on the same side.

AlyssaD_2K

In addition, I would add that the slow step in the reaction is the elementary step with the highest activation energy (you can see this from the Arrhenius equation) and therefore that transition state would have the highest energy.

AlyssaD_2K

It just means that those atoms are grouped together. So in your example, CH2 is grouped together, which makes sense when you draw out the entire hydrocarbon chain. I think that when there are substituents, you have to write it in the way that Lavelle taught us on Wednesday which clearly defines what...

AlyssaD_2K

The double bond between the carbon atoms contain a lot of electrons, giving that area a more negative charge. That's why the hydrogen in the HBr molecule is attracted to it, because the H has a partial positive charge and Br has a partial negative charge due to its larger electronegativity. When the...

AlyssaD_2K

I think it's because the overall reaction may have multiple elementary steps, but the elementary reaction itself is the simplest. Because of this, we can use the coefficients for the elementary reaction in its rate law. Since we do not know the mechanism behind the overall reaction, we can't do this...

AlyssaD_2K

Both of those constants are the same, just one is a little more specific. I wouldn't worry about which one you use, just use the one given when you take the test.

AlyssaD_2K

In that example, you don't need to switch the sign because the total reaction includes the forward half reaction of the cathode, so we want that value. However, we want the reverse half reaction of the anode, so that's why you need to change the sign of that one.

AlyssaD_2K

I'm pretty sure that any kind of information like that will be provided.

AlyssaD_2K

In the textbook and in HW problem 8.11 the equation w=-nRT*ln(V2/V1) was used.
I was confused about how this was derived and if this is a definition we will be using in class/may be tested on.
Thank you!

AlyssaD_2K

From my understanding, I'm pretty sure that the heat capacity is always an extensive property. Dividing by the amount (like in the example in the course reader) gives an answer that is "per degree Celsius" because we want the units to be kJ/Celsius (since heat capacity is the heat required...

CHEMISTRY COMMUNITY

Search found 10 matches

Re: Example on Page 17 (Organic Textbook)

Re: Reaction Profiles

Re: Drawing Organic Molecules

Re: Determining Where Hydrogen Bonds

Re: Elementary Rate Laws

Re: 14.9 and using G=-nFE

Re: Calculating standard reduction potential

Re: Mean bond Enthalpies

Another "work" definition? [ENDORSED]

Re: Extensive Property vs. Intensive Property