Why do aromatics belong in the nuthouse?
Because they are CYCLO. hahahahahah rip lol.
Search found 23 matches
- Sun Mar 19, 2017 11:18 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2989343
- Sun Mar 19, 2017 11:06 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Saying Thank You to Dr. Lavelle
- Replies: 490
- Views: 513238
Re: Saying Thank You to Dr. Lavelle
Dr. Lavelle, Thank you for being such a superb and caring professor! The hours of preparation and organization of the lectures, course readers, and all of the resources is greatly appreciated. I came to college not looking forward to taking chemistry courses because in high school, AP chemistry neve...
- Sun Mar 19, 2017 10:58 pm
- Forum: *Nucleophilic Substitution
- Topic: Question 5 on the 2013 final
- Replies: 2
- Views: 1371
Re: Question 5 on the 2013 final
And since this is not an addition reaction, it must be a SN2 (bimolecular nucleophilic substitution) reaction, because that's the only two reactions we've gone over in the course reader.
- Sun Mar 19, 2017 10:55 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: Catalyst
- Replies: 16
- Views: 2356
Re: Catalyst
Yes, @kira, if we have a reactant that shows up as a final product, we know it is a catalyst because it was not an intermediate that was "used up" in the reaction.
- Sun Feb 26, 2017 10:38 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Slow Reaction
- Replies: 11
- Views: 1908
Re: Slow Reaction
When given a two chemical reactions, and we know that one is slow and the other is fast, the problem should either give us clues to determining which is which. For example, the problem could say that the equilibrium constant (k1) of one reaction is slower than the equilibrium constant (k2) of the ot...
- Sun Feb 26, 2017 10:31 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Changes in both volume and temp [ENDORSED]
- Replies: 5
- Views: 1209
Re: Changes in both volume and temp [ENDORSED]
I think the problem would state that the reaction will occur at constant temperature so that we know which equation to use.
- Sun Feb 26, 2017 10:29 pm
- Forum: Zero Order Reactions
- Topic: Detail in the Rate Laws
- Replies: 2
- Views: 537
Re: Detail in the Rate Laws
What about when we're asked to find the temperature of a first order reaction? When we switch the first order integrated rate law to solve for temperature, the negative sign of the rate constant (K), disappears. Am I doing algebra wrong or does it just conveniently cancels itself somehow?
- Sun Feb 26, 2017 10:24 pm
- Forum: General Rate Laws
- Topic: Catalyst
- Replies: 3
- Views: 704
Re: Catalyst
Does changing the temperature also affect the catalyst, which then affects the activation energy and the rate constant?
- Mon Feb 06, 2017 11:52 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Number of mols to use in the equation [ENDORSED]
- Replies: 3
- Views: 839
Re: Number of mols to use in the equation [ENDORSED]
Does this mean that we would still need to identify the oxidation states of each element?
- Mon Feb 06, 2017 11:51 am
- Forum: Balancing Redox Reactions
- Topic: Conductor as an Electrode
- Replies: 3
- Views: 578
Re: Conductor as an Electrode
It doesn't ALWAYS have to be platinum, the course reader just used Pt as an example.
- Sun Jan 29, 2017 12:58 am
- Forum: Phase Changes & Related Calculations
- Topic: Derivations
- Replies: 21
- Views: 3360
Re: Derivations
My TA reviewed the equations sheet that will be given to us for the quiz and he said that almost all the equations we need are on the sheet. The only equation we need to memorize is the one that calculates work when it's a reversible isothermal reaction, which is w = -nRT ln(V2/V1)
- Sun Dec 04, 2016 9:36 pm
- Forum: Ideal Gases
- Topic: Chemical equilibrium
- Replies: 4
- Views: 1120
Re: Chemical equilibrium
YUP to all the explanations above. When an equation is at equilibrium, it just means that the forward reaction is the same rate as the reverse reaction, and both products and reactants are still being produced.
- Sun Dec 04, 2016 9:29 pm
- Forum: *Biological Importance of Buffer Solutions
- Topic: Heisenberg-Hasselbach
- Replies: 2
- Views: 1656
Re: Heisenberg-Hasselbach
Do we use the Heisenberg-Hasselbach equation only when we are given a buffer solution problem? Or does it work when you just have all the information to plug in?
- Sun Dec 04, 2016 9:27 pm
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: What do we do if one atom has an atomic number below 8 and the other has an atomic number above 8?
- Replies: 2
- Views: 648
Re: What do we do if one atom has an atomic number below 8 and the other has an atomic number above 8?
When we have a heteronuclear molecule (z>8 in one atom and z<8 in second atom), then we stick with the z<8 MO diagram. At least that's what the TA told us.
- Sun Dec 04, 2016 9:23 pm
- Forum: Conjugate Acids & Bases
- Topic: What does a conjugate acid/base do? [ENDORSED]
- Replies: 4
- Views: 1620
Re: What does a conjugate acid/base do? [ENDORSED]
No I don't think so. However, usually when there's a strong conjugate acid/base, the "second step" of the equation involves the conjugate acid/base to take a proton from water and reform into it's original base/acid, and making the solution either basic or acidic.
- Sun Dec 04, 2016 9:17 pm
- Forum: Polyprotic Acids & Bases
- Topic: Indicators
- Replies: 3
- Views: 1218
Re: Indicators
I don't think we need to memorize the type of indicators since they'll be listed for us, like how it was in one of the practice final exams.
Re: Bis
So when do we use bis-, tris-, tetrakis-, pentakis-, etc?
- Sun Dec 04, 2016 9:13 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Equilibrium Constants for Various Reactions
- Replies: 2
- Views: 580
Re: Equilibrium Constants for Various Reactions
All the equilibrium constants will be given to us in during the test, so we don't have to memorize them! (:
- Sun Dec 04, 2016 9:11 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Duality of the electron
- Replies: 2
- Views: 908
Re: Duality of the electron
Also Shrodinger's wave equation shows that electrons also have wavelike properties.
- Sun Dec 04, 2016 9:00 pm
- Forum: Lewis Acids & Bases
- Topic: Common Acids and Bases
- Replies: 3
- Views: 1027
Re: Common Acids and Bases
But we do need to know that Kw = 10^-14.
- Sun Dec 04, 2016 8:50 pm
- Forum: Hybridization
- Topic: Polar/nonpolar [ENDORSED]
- Replies: 14
- Views: 2627
Re: Polar/nonpolar [ENDORSED]
So does that mean we have to draw the Lewis structure of the molecule to see if it has a dipole moment?
- Sun Dec 04, 2016 8:46 pm
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: What is MO theory for? [ENDORSED]
- Replies: 20
- Views: 8860
Re: What is MO theory for? [ENDORSED]
For heteronuclear molecules (like NO), we always stick with the MO diagram for z<8. That's what the TA told us when we went his review.
- Thu Oct 06, 2016 11:13 pm
- Forum: Photoelectric Effect
- Topic: Wavelength vs. Photons [ENDORSED]
- Replies: 5
- Views: 1258
Re: Wavelength vs. Photons [ENDORSED]
@Joanne I think we have to take into account that it's the ENERGY of the photons that are ejecting the electrons from the metal atoms in the photoelectric effect. So in that case, light is acting as photon particles, not as waves. Also, the equation that is related to the photoelectric effect measur...