Search found 13 matches
- Sat Mar 18, 2017 7:17 pm
- Forum: *Cycloalkenes
- Topic: 2013 FINAL Q6A
- Replies: 4
- Views: 1721
Re: 2013 FINAL Q6A
Carbon 2 is circled, if you check the solutions in the book. Carbon 3 is not sp2 hybridized, since it is bonded to 2 other carbon atoms and 2 hydrogen atoms.
- Sat Mar 11, 2017 3:53 pm
- Forum: *Ethers
- Topic: Homework Ch. 2 #30
- Replies: 3
- Views: 2701
Re: Homework Ch. 2 #30
I would first draw out the molecule so I can see how the oxygen is attached to the carbons. After drawing it out, you should be able to clearly see that there is an ether functional group. We know that in order to name an ether, we have to identify the longest chain and the shortest chain. The short...
- Sat Mar 04, 2017 2:06 pm
- Forum: *Electrophiles
- Topic: Nucleophile vs Electrophile
- Replies: 1
- Views: 1279
Nucleophile vs Electrophile
Is HI a nucleophile or electrophile?
- Sat Feb 25, 2017 2:36 pm
- Forum: Administrative Questions and Class Announcements
- Topic: O-Chem Black and white textbook
- Replies: 3
- Views: 794
Re: O-Chem Black and white textbook
Should we bring the OChem textbook with us to class?
- Sun Feb 19, 2017 10:48 am
- Forum: First Order Reactions
- Topic: 2013 Quiz Preparation Question#5 for 1st Order Reactions [ENDORSED]
- Replies: 3
- Views: 849
Re: 2013 Quiz Preparation Question#5 for 1st Order Reactions [ENDORSED]
I used 2^n to get my answer 2 is a multiple of 64. So after I solve for n, n lets me know how many half-lives the process cycles through. In this case to get 1/64, we would have to raise (1/2) to a power of 6. This lets me know that the process has gone through 6 half lives so I would have to multip...
- Sat Feb 18, 2017 8:36 pm
- Forum: First Order Reactions
- Topic: 2013 Quiz Preparation Question#5 for 1st Order Reactions [ENDORSED]
- Replies: 3
- Views: 849
Re: 2013 Quiz Preparation Question#5 for 1st Order Reactions [ENDORSED]
Since this reaction is in first order, the half-live is equal to ln2/k. However we already know the half life, which is 0.43s. To find 1/64 of the concentration, we can set this equal to 1/2^n because 2 is a factor of 64. Then you solve for n, 1/2^n=1/64 and multiply the value you get by the given h...
- Mon Feb 13, 2017 4:50 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3966836
Re: Post All Chemistry Jokes Here
A galvanic cell says to another galvanic call: "We're meant to be because our relationship is electric."
- Sun Feb 12, 2017 1:26 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: E State Function?
- Replies: 1
- Views: 418
E State Function?
Why is E not a state function?
- Sun Feb 05, 2017 8:05 pm
- Forum: Balancing Redox Reactions
- Topic: Pneumonic Device
- Replies: 2
- Views: 868
Re: Pneumonic Device
Also
Red Cat- Reduction at the Cathode
An Ox- Oxidation at the anode
Red Cat- Reduction at the Cathode
An Ox- Oxidation at the anode
- Sat Feb 04, 2017 1:13 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Electrochemistry and half-reactions
- Replies: 1
- Views: 443
Electrochemistry and half-reactions
I'm confused on how to make a cell reaction for Pt(s)|O2(g)|H+(aq)||OH-(aq)|O2(g)|Pt(s) on problem 14.11d in the textbook. In the solution manual, it says that the equation for the anode is O2 + 4H+ + 4e- --> 2H2O. Why is the H+ in this equation written as the reactant instead of the product?
- Sun Jan 29, 2017 1:39 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3966836
- Sun Jan 22, 2017 2:29 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: Calculating Change in Entropy
- Replies: 1
- Views: 426
Calculating Change in Entropy
When we calculate change in entropy, how do we know when to use the enthalpy of formation vs the enthalpy of vaporization/fusion?
For example, on question 9.15 why do we use the enthalpy of formation to calculate the freezing of H2O instead of using the enthalpy of fusion?
For example, on question 9.15 why do we use the enthalpy of formation to calculate the freezing of H2O instead of using the enthalpy of fusion?
- Sat Jan 14, 2017 7:14 pm
- Forum: Administrative Questions and Class Announcements
- Topic: CH 8 Which HW Problems to do first?
- Replies: 14
- Views: 10553
Re: CH 8 Which HW Problems to do first?
Will there be a list of recommended readings for each chapter? Like a certain chapter or section of the textbook to read before each lecture? I kind of go off the course reader. Depending on where we left off on the previous lecture, I just look at the topics on the next few pages in the course rea...