CHEMISTRY COMMUNITY

Bhuvan Kommineni 3L

Yes, but it depends on the solvent! The solvent is never involved (most of the time it's water) but water is apart of the reaction so include it when there is another inert solvent being used.

Bhuvan Kommineni 3L

I recently went vegetarian so my new favorite burger is the mushroom burger at Shake Shack :)

Bhuvan Kommineni 3L

I'm debating on which other GE to take any suggestions?

Bhuvan Kommineni 3L

ADiabatic means there is no heat transfer so q=0!

Bhuvan Kommineni 3L

Great job guys! I hope you guys were able to relax this weekend!

Bhuvan Kommineni 3L

I didn't take 14A with lavelle but I would just recommend doing the old practice problems from the textbook as he frequently pulls from there.

Bhuvan Kommineni 3L

Thanks! Happy Valentines Day!

Bhuvan Kommineni 3L

Yes it should be, although I may be wrong on this.

Bhuvan Kommineni 3L

Use q = mcAt when you have grams of a substance and ncAt when you have mols (n = mols).

Bhuvan Kommineni 3L

A bomb calorimeter is an isolated system!

Bhuvan Kommineni 3L

G0 is G at STP conditions. Small difference!

Bhuvan Kommineni 3L

Wow, these are all awesome! Thanks for the recs!

Bhuvan Kommineni 3L

I had the same question. Thanks for sharing!

Bhuvan Kommineni 3L

Yes, I think that is the case. I had this same problem in my work

Bhuvan Kommineni 3L

Totally agree! The textbook problems were super similar to the actual exam!

Bhuvan Kommineni 3L

For me the more multi-step integrated questions were difficult!

Bhuvan Kommineni 3L

Seeing this made me feel better. Grades don't define anyone!

Bhuvan Kommineni 3L

Definitely some of the upper division courses for a chemistry major I'm sure!

Bhuvan Kommineni 3L

Don't think of this as a math rule... think of it conceptually. Under what conditions can X be emitted? This would be when the K value is extremely small, that it doesn't make a difference.

Bhuvan Kommineni 3L

I indulged in some retail therapy :P

Bhuvan Kommineni 3L

Temperature describes the temperature at which a reaction takes place. Enthalpy describes the change in heat from the reaction itself.

Bhuvan Kommineni 3L

I could use help on this as well!

Bhuvan Kommineni 3L

Standard Enthalpy, or delta h0, is just the enthalpy of a reaction at STP conditions. Standard Enthalpy of Formation is the delta H of a reaction forming a molecule at STP, with the reactants all being in their standard forms.

Bhuvan Kommineni 3L

This is true for monoprotic acids.

Bhuvan Kommineni 3L

I think we will use it a good amount in our problems.

Bhuvan Kommineni 3L

% ionization tells us how much of the acid/base has donated/accepted a proton. This, in turn, denotes the relative activity of the acid/base.

Bhuvan Kommineni 3L

Partial pressure is only applicable to gases!

Bhuvan Kommineni 3L

Yes, the Q value will eventually reach K if the reaction is currently not at equilibrium. If it is at equilibrium then Q = K.

Bhuvan Kommineni 3L

No, there is no change when the concentration of a liquid or solid is modified at equilibrium.

Bhuvan Kommineni 3L

Use the other given equations to manipulate the equilibrium expressions such that the original expression can be written as a product of two new ones. In my case, I had to take the reciprocal of one of the new reactions as well as raise one of the new reactions to the third power. With these manipul...

Bhuvan Kommineni 3L

Basically, you can set up an ICE table using the equilibrium concentrations from earlier to help provide initial concentrations before the addition. After the addition of NO2, our new initial concentration of NO2 is 3.05 mol. For the initial N2O4, it is the same as the equilibrium concentration. Now...

Bhuvan Kommineni 3L

I think it is helpful to fill in the gaps between what you learn in lecture and what you need to know overall. It can have extra information that lectures might have missed.

Bhuvan Kommineni 3L

Yes! Depending on the situation that is entirely possible.

Bhuvan Kommineni 3L

Hi! I'm in the same boat as you! I did not take 14A with Lavelle, so a lot of this advice is useful.

Bhuvan Kommineni 3L

I want to study more chemistry and become an exemplary chem 14b student. Chem, eat, sleep, repeat.

Bhuvan Kommineni 3L

I agree with Andreas's response, the reaction would be at a Q value different from K, meaning that after that reactant is added the system is no longer at equilibrium. However, it is not possible for the reaction to be completely limited by B because the reverse reaction still takes place. Remember,...

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