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).
Search found 22 matches
- Thu Mar 16, 2017 9:26 pm
- Forum: *Organic Reaction Mechanisms in General
- Topic: Room temperature
- Replies: 1
- Views: 956
- Mon Mar 06, 2017 11:49 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 3 Winter 2017
- Replies: 183
- Views: 30017
Re: Quiz 3 Winter 2017
for #1, why do we need "iso" in front of propyl? wouldn't the 4- signify the branching?
- Sat Mar 04, 2017 4:46 pm
- Forum: *Alkanes
- Topic: General list of special case common names
- Replies: 1
- Views: 470
Re: General list of special case common names
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.
- Wed Feb 22, 2017 6:31 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Rate Law
- Replies: 2
- Views: 615
Re: Rate Law
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?
- Wed Feb 22, 2017 6:20 pm
- Forum: Method of Initial Rates (To Determine n and k)
- Topic: Order
- Replies: 1
- Views: 415
Re: Order
It can be fractional but I doubt we'll see that very often.
- Thu Feb 09, 2017 8:23 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Change in entropy= q/T [ENDORSED]
- Replies: 3
- Views: 763
Re: Change in entropy= q/T [ENDORSED]
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.
- Thu Feb 02, 2017 9:59 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3881987
- Thu Feb 02, 2017 9:53 am
- Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
- Topic: Rechargeable Batteries
- Replies: 2
- Views: 909
Re: Rechargeable Batteries
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...
- Tue Jan 17, 2017 3:44 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: units for enthalpy problems
- Replies: 4
- Views: 1024
units for enthalpy problems
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.
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.
- Fri Jan 13, 2017 4:06 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Question 8.9
- Replies: 3
- Views: 517
Re: Question 8.9
What does the variable w stand for?
- Thu Dec 01, 2016 12:44 pm
- Forum: Bronsted Acids & Bases
- Topic: Acid/Base List from Course Reader
- Replies: 1
- Views: 518
Re: Acid/Base List from Course Reader
This is the list given to us.
- Wed Nov 23, 2016 12:06 am
- Forum: Administrative Questions and Class Announcements
- Topic: Chemistry 14B Enrollment
- Replies: 3
- Views: 1556
Re: Chemistry 14B Enrollment
I heard that the waitlist was opening back up tonight, but when I try to enroll it asks for a PTE number...
- Tue Nov 22, 2016 5:11 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: Using ICE Table
- Replies: 1
- Views: 748
Using ICE Table
Hi, can someone help me understand which situations we use an ICE table in? Thanks.
- Wed Nov 16, 2016 7:24 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Sulfato
- Replies: 2
- Views: 1089
Re: Sulfato
Sulfato is one of those ligands that is monodentate but can be bidentate (hence the asterix).
- Wed Nov 16, 2016 7:18 pm
- Forum: Naming
- Topic: Naming Coordinate Compounds
- Replies: 1
- Views: 474
Re: Naming Coordinate Compounds
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...
- Fri Nov 04, 2016 3:22 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3881987
Re: Post All Chemistry Jokes Here
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!
NA-NA-NA-NA
NA-NA-NA-NA
NA-NA-NA-NA
NA-NA-NA-NA
BATMAAAN!
- Thu Oct 27, 2016 9:10 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Bruincast
- Replies: 26
- Views: 10658
Re: Bruincast
Thanks! I got it now. Just using it to review :)
- Thu Oct 20, 2016 10:36 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Bruincast
- Replies: 26
- Views: 10658
Bruincast
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
Thanks,
Audrey
- Wed Oct 12, 2016 3:31 pm
- Forum: Trends in The Periodic Table
- Topic: elements with low ionization energy
- Replies: 1
- Views: 1393
elements with low ionization energy
I am confused as to why elements with low ionization energy conduct electricity in their solid state?
- Wed Oct 12, 2016 3:28 pm
- Forum: Student Social/Study Group
- Topic: Delta Terrace Study Group
- Replies: 3
- Views: 1071
Re: Delta Terrace Study Group
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...
- Wed Oct 12, 2016 3:25 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: Atomic Spectra & Energy levels confusion
- Replies: 4
- Views: 662
Re: Atomic Spectra & Energy levels confusion
Yes that is what I meant! Ok thank you!
- Fri Sep 30, 2016 4:59 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: Atomic Spectra & Energy levels confusion
- Replies: 4
- Views: 662
Atomic Spectra & Energy levels confusion
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...