CHEMISTRY COMMUNITY

304751905

If the Gibb's free energy is negative, then the reaction will be spontaneous, and it will likely occur at room temperature.
You can also assess the deltaS and deltaH values to see if the reaction will take place at low, high, or all temperatures (see page 37 in the course reader).

304751905

for #1, why do we need "iso" in front of propyl? wouldn't the 4- signify the branching?

304751905

I'm pretty sure the only ones we are going to see are "iso" and "neo." That should all be on page 94 in the course reader.

304751905

I'm wondering this too. When do we have to use the pre-equilibrium approach and when can we just calculate the rate of the slowest step?

304751905

It can be fractional but I doubt we'll see that very often.

304751905

I have another question that has to do with the same equation. If T=0K like in the quiz, wouldn't that make entropy 0 or not exist? How can something have entropy when it is at absolute zero? It can't move and it's in crystalline structure.

304751905

304751905

This article seems pretty cool: "this new battery could allow for wireless devices to transmit their signals 30 times farther — or, perhaps more usefully, be equipped with a battery that’s 30 times smaller. If that wasn’t enough, this new battery is rechargeable — and can be charged 1,000 times...

304751905

Hi,
In homework question 8.59 it asks to calculate the standard rxn enthalpy for a given reaction and the answer is in KJ/mol, and 8.63 asks for the standard rxn of enthalpy for another equation but the answer is just given in KJ. What units should we use?
Thanks.

304751905

What does the variable w stand for?

304751905

This is the list given to us.

304751905

I heard that the waitlist was opening back up tonight, but when I try to enroll it asks for a PTE number...

304751905

Hi, can someone help me understand which situations we use an ICE table in? Thanks.

304751905

Sulfato is one of those ligands that is monodentate but can be bidentate (hence the asterix).

304751905

Hi! The oxidation state is calculated by looking at the charges of all the ligands inside of the brackets. For example, if the coordination complex is neutral (no charge written outside of the brackets) you can calculate what positive charge the transition metal has by determining the collective neg...

304751905

Sixteen sodiums walk into a room. Who's next?
NA-NA-NA-NA
NA-NA-NA-NA
NA-NA-NA-NA
NA-NA-NA-NA
BATMAAAN!

304751905

Thanks! I got it now. Just using it to review :)

304751905

Hi! Is bruin cast only audio? When I click on the Lavelle's link for bruincasts on his website it takes me to a page where all the lectures are but only the audio is there.
Thanks,
Audrey

304751905

I am confused as to why elements with low ionization energy conduct electricity in their solid state?

304751905

Yes I would love to join! When/where? I think I saw another post on here about a delta terrace study group so maybe we can join up...

304751905

Yes that is what I meant! Ok thank you!

304751905

Hi! Today in class we learned about the equation E₂= -hR/n². I'm confused as to why the E₂ is lower as the energy level n (1,2,...) gets bigger. I get that it makes the denominator get larger and larger which makes the result smaller, but conceptually I thought it would be the opposite...

CHEMISTRY COMMUNITY

Search found 22 matches

Re: Room temperature

Re: Quiz 3 Winter 2017

Re: General list of special case common names

Re: Rate Law

Re: Order

Re: Change in entropy= q/T [ENDORSED]

Re: Post All Chemistry Jokes Here

Re: Rechargeable Batteries

units for enthalpy problems

Re: Question 8.9

Re: Acid/Base List from Course Reader

Re: Chemistry 14B Enrollment

Using ICE Table

Re: Sulfato

Re: Naming Coordinate Compounds

Re: Post All Chemistry Jokes Here

Re: Bruincast

Bruincast

elements with low ionization energy

Re: Delta Terrace Study Group

Re: Atomic Spectra & Energy levels confusion

Atomic Spectra & Energy levels confusion