Search found 10 matches

by Jeffreyho97
Sun Mar 12, 2017 4:32 pm
Forum: *Alcohols
Topic: New kinds of structures
Replies: 1
Views: 304

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??
by Jeffreyho97
Sun Mar 05, 2017 4:53 pm
Forum: *Alkanes
Topic: Numbers
Replies: 1
Views: 234

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?)
by Jeffreyho97
Sat Feb 25, 2017 9:00 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Steady-State Approach vs. Pre-Equilibrium Approach [ENDORSED]
Replies: 2
Views: 325

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.
by Jeffreyho97
Mon Feb 20, 2017 12:57 pm
Forum: *Organic Reaction Mechanisms in General
Topic: Equation Approaches
Replies: 1
Views: 242

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.
by Jeffreyho97
Mon Feb 20, 2017 12:55 pm
Forum: *Electrophiles
Topic: Rate Laws
Replies: 2
Views: 291

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
by Jeffreyho97
Mon Feb 06, 2017 5:48 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Conducting Solids
Replies: 1
Views: 216

Conducting Solids

Earlier Dr. Lavelle, spoke of some reactions that have not conducting solids. Can someone explain the reasoning behind this again?
by Jeffreyho97
Fri Feb 03, 2017 6:51 pm
Forum: Balancing Redox Reactions
Topic: Formulas
Replies: 1
Views: 212

Formulas

Can someone just help me clarify when and how to use each formula we just learned for electrochemistry?
by Jeffreyho97
Sun Jan 29, 2017 6:07 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: standard enthalpy of combustion
Replies: 1
Views: 213

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...
by Jeffreyho97
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: 204

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?
by Jeffreyho97
Thu Jan 12, 2017 3:46 pm
Forum: Phase Changes & Related Calculations
Topic: Sublimiation
Replies: 6
Views: 609

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 - .

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