CHEMISTRY COMMUNITY

deniise_garciia

if anyone knows more about this may they please update us, I have this similar question.

deniise_garciia

I had this similar question before and someone told me that it will mainly be more on things after the midterm but it will also be cumulative.

deniise_garciia

Thank you Mikka! I wasn't able to find that in the class website.

deniise_garciia

How is anyone going about studying for the final? Is there any plf's or TA's that are holding review session soon? starting this week?

deniise_garciia

Does anyone know if the final is cumulative? Or would we mostly be tested on what’s after the midterm?

deniise_garciia

How do you know if a reaction is zeroth, first or second order if it is not specified?

deniise_garciia

On the final, would Lavelle specify if a reaction is zeroth, first or second order?

deniise_garciia

How do you know to label each element in increasing power? It was a test #2 question.

deniise_garciia

Does anyone know when would we get our test #2 back?

deniise_garciia

Does anyone know the topics test #2 will cover?

deniise_garciia

How do you know what temperature to use for delta G when it’s not given in the question?

deniise_garciia

How can you tell if delta G is spontaneous or non spontaneous when it is Temperature dependent?

deniise_garciia

I still have trouble with redox and oxidation, would someone be kind enough to explain step by step how Lavelle did his in lecture on Wednesday, thanks!

deniise_garciia

Most likely I’m our discussion section. If not, you can email your TA to find out.

deniise_garciia

How can you tell when deltaG (Gibbs free energy) is spontaneous or non spontaneous?

deniise_garciia

I missed lecture today because of a doctors appointment, I was wondering if anyone can please share their notes with me, I would greatly appreciate it!

deniise_garciia

Recalling back from what Lavelle mentioned in class, he said, because the enthalpy required to vaporize is higher than the enthalpy required to liquidize, thus steam is hotter than boiled water.

deniise_garciia

How can one tell when you must use the ideal gas law?

deniise_garciia

Would anyone mind posting some of the help that the TA's and UA's had during this week? I'd greatly appreciate it! the fact that I couldn't go to some is because I commute and its not worth wasting 4 hours of commute only for a 1 hour help. Thanks again!

deniise_garciia

Here are my notes also, I like to include the drawings that he puts on the slide along with them lol

deniise_garciia

It's important to note that ∆Hfº of a substance in its most stable form is 0. Some other examples of when they equal 0 are, H2, O2, N2, Cl2, Br2, I2, and F2, so in this case O2 = O, which iis in it's most stable form making it equal to 0.

deniise_garciia

Hey Elizabeth, So, ∆U= q + w, when they are (+) or (-), Energy entering a system carries a (+) sign If heat is absorbed by the system then q is > 0 (+) If work is DONE ON A SYSTEM w>0 (+) Energy leaving a system carries a (-) sign giving off energy If heat is GIVEN OFF BY A SYSTEM q<0 (-) If work is...

deniise_garciia

Thanks Janice!!
I was also wondering how to go about this problem, thank you for clarifying!

deniise_garciia

I had this same question, but I assume that the products in an instance that they are not zero is when the question first asks you to find a concentration at equilibrium and there is a follow up question that states that a certain product was added towards the end. As, for the question in the book I...

deniise_garciia

Same here!! But I'm planning to study for the test by going over lecture notes and tying them back to my PLF notes (which are very helpful), I'm also trying to teach the topics to a buddy of mine who doesn't know the topics and if I am able to teach it then it'll mean I really learned the topic :), ...

deniise_garciia

I'm not sure if this helps or not, but I have the 6th edition and this similar problem appears in my textbook but mine says that H3O+ part (c) is 3.1mmol•L^-1 and when converting it to only moles it gives 0.0031 which is 3.1 x 10^-3. If by any chance this helps.

deniise_garciia

if in any case it is given in Celsius you only have to add 273.15 to the given temp. and it'll give you the Kelvin temp.

deniise_garciia

In regards to the question above, when is Kp used?

deniise_garciia

How do you know when to use Q or K, is there a certain calculation? Or would the question specify so?

deniise_garciia

Kp = Kc (RT)^Dn
P = nRT/V
R = 0.0821 L atm/mol K
T = Temperature in K
Dn = tot. mol product - tot. mol reactant

Not sure if this is the way, but I'm also trying to figure this out. Someone correct me if I'm wrong please!

CHEMISTRY COMMUNITY

Search found 30 matches

Re: Curve?

Re: Final

Re: Final

Final

Final

Order reactions

Reactions Orders

Test #2

Test #2

Test #2

Gibbs Free energy

Delta G spontaneity

Redox and Oxidation

Re: Midterm Grades

Gibbs free energy

Lecture Notes

Re: Steam vs. Boiled Water

Re: Ideal Gas Laws

Re: Midterm [ENDORSED]

Re: Lecture Notes (1/30)

Re: 8.65 6th Edition

Re: w and q

Re: Question 8.3 6th edition

Re: Initial Concentrations of ICE Box and 12.79 (6th Edition)

Re: Studying for First Discussion Test

Re: 7th Edition 6A.19

Re: Pv=nRT [ENDORSED]

Re: use

Re: Q and K [ENDORSED]

Re: Converting Kc to Kp