Search found 10 matches
- Sun Mar 12, 2017 4:32 pm
- Forum: *Alcohols
- Topic: New kinds of structures
- Replies: 1
- Views: 463
New kinds of structures
Can someone help me identify the differences between the aldehyde, ketone, and ether? Also what is meant by the ether attaches to the smallest chain??
Numbers
Can someone give me a brief summary of how everything should be ordered when naming the compounds? (Also was there something about alphabetical order as well?)
- Sat Feb 25, 2017 9:00 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Steady-State Approach vs. Pre-Equilibrium Approach [ENDORSED]
- Replies: 2
- Views: 649
Re: Steady-State Approach vs. Pre-Equilibrium Approach [ENDORSED]
I don't think it matters whether the first or second step is the slow step. Lavelle said that it probably is better to just use the pre-equilibrium step because it is more straightforward. Remember they both give the same result.
- Mon Feb 20, 2017 12:57 pm
- Forum: *Organic Reaction Mechanisms in General
- Topic: Equation Approaches
- Replies: 1
- Views: 473
Re: Equation Approaches
If I understood what Lavelle said correctly, it is always batter to use the pre-equilibrium method just because it is simpler.
- Mon Feb 20, 2017 12:55 pm
- Forum: *Electrophiles
- Topic: Rate Laws
- Replies: 2
- Views: 706
Re: Rate Laws
1st rate: the amount of material you put in is directly proportional to its rate
2nd rate: the rate is proportional to the amount squared
0th rate: rate stays the same no matter how much you put in
2nd rate: the rate is proportional to the amount squared
0th rate: rate stays the same no matter how much you put in
- Mon Feb 06, 2017 5:48 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Conducting Solids
- Replies: 1
- Views: 417
Conducting Solids
Earlier Dr. Lavelle, spoke of some reactions that have not conducting solids. Can someone explain the reasoning behind this again?
- Fri Feb 03, 2017 6:51 pm
- Forum: Balancing Redox Reactions
- Topic: Formulas
- Replies: 1
- Views: 383
Formulas
Can someone just help me clarify when and how to use each formula we just learned for electrochemistry?
- Sun Jan 29, 2017 6:07 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: standard enthalpy of combustion
- Replies: 1
- Views: 366
Re: standard enthalpy of combustion
I believe the main thing you may need to do, if anything, is write out a equation where the compound they give you mixes with O2 to make CO2 and H2O. That is not always necessary though. But other than that, there really isn't any difference in how you find this standard enthalpy in comparison to fi...
- Thu Jan 19, 2017 2:43 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Bond Enthalpies
- Replies: 1
- Views: 384
Bond Enthalpies
For bond enthalpies, if all that is given is the formula of a chemical compound, how would I know which bonds are broken, and what products are created? Also, are the enthalpies for the broken and formed bonds usually given in the problem? If not, where can they be found?
- Thu Jan 12, 2017 3:46 pm
- Forum: Phase Changes & Related Calculations
- Topic: Sublimiation
- Replies: 6
- Views: 1429
Re: Sublimiation
I may be wrong, but when I asked my TA this question, she said that in this course, the reverse of such phase change as sublimation would still be called the same. The difference is that the Delta H has a reversed sign: + to - .