Search found 10 matches

by Nick_OConnell_2F
Sat Mar 11, 2017 3:09 am
Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
Topic: Eclipsed vs. Staggered (energy levels) [ENDORSED]
Replies: 1
Views: 3012

Re: Eclipsed vs. Staggered (energy levels) [ENDORSED]

Hi Soonwoo, Single bonds are capable of rotating with respect to each other yet still being the same molecule; these are called conformations of alkane molecules. In lecture we learned about staggered conformation and eclipsed conformation as you mentioned. The energy level of a conformation depends...
by Nick_OConnell_2F
Thu Mar 09, 2017 9:07 pm
Forum: *Alkenes
Topic: Cis and Trans
Replies: 2
Views: 339

Re: Cis and Trans

Although the IUPAC standard for naming uses Z & E instead of cis and trans, Dr. Lavelle said he will accept either naming convention in 14B. So yes, they can be used interchangeably.
by Nick_OConnell_2F
Sun Mar 05, 2017 10:28 pm
Forum: *Cycloalkanes
Topic: Tert- Naming
Replies: 4
Views: 1243

Re: Tert- Naming

when we name something, for example, "tert butyl" does the t count in the alphabetical order? or does it not? I thought it would, since it's a common name, and for other common names like isopropyl or neopentyl, we include the prefix for alphabetic consideration? And for number 1.17 in th...
by Nick_OConnell_2F
Wed Feb 22, 2017 1:13 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Determining an Intermediate
Replies: 1
Views: 233

Re: Determining an Intermediate

Hi Nicole, The intermediate of a reaction is any compound that is not present in either the reactants or products of the given reaction. For example in the reaction NO2 + CO -> NO + CO2 from the course reader (pg 69), you see that NO3 is a product of elementary step 1. However, NO3 is not a reactant...
by Nick_OConnell_2F
Mon Feb 20, 2017 12:11 am
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: Order of a Reaction
Replies: 2
Views: 298

Re: Order of a Reaction

To determine the order of a reaction, we use the method of initial rates . This method requires that you have the initial concentration of reactants and the initial rates of reaction for a series of experiments under the same general reaction. To find the order, create a ratio of initial rates to in...
by Nick_OConnell_2F
Sat Feb 11, 2017 9:00 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: 14.9 and using G=-nFE
Replies: 3
Views: 564

Re: 14.9 and using G=-nFE

At first glance I was going to say they were the same also. However, the one on the formula sheet is actually incorrect . Notice how on the Formula sheet, F = 96,4853. If the three was meant to be included, it should have read 964,853. Upon looking up the actual constant, the 3 is the first decimal ...
by Nick_OConnell_2F
Thu Feb 02, 2017 8:03 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Platnium [ENDORSED]
Replies: 1
Views: 245

Re: Platnium [ENDORSED]

When considering whether or not to use the inert conductor Platinum, think of the phase that the reactants and products are in over the course of the reaction rather than the actual elements themselves. If a reaction has no reactants/products at any time in a solid phase (meaning they can help form ...
by Nick_OConnell_2F
Thu Feb 02, 2017 6:06 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Using an inert electrode
Replies: 2
Views: 236

Re: Using an inert electrode

You would use an inert electrode any time your reaction has no conducting solids to transfer electrons. For example, look at the reaction in the lecture notes: 2Fe^{3+}(aq) + Cu(s)\rightarrow Cu^{2+}(aq) + 2Fe^{2+}(aq) . Notice how iron is never in solid form during t...
by Nick_OConnell_2F
Sun Jan 29, 2017 4:03 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Gibb's Free Energy
Replies: 2
Views: 294

Re: Gibb's Free Energy

Hi Guillermo, Gibbs free energy, enthalpy, and entropy are all entirely related! Foremost, they are all energy terms and can thus be subtracted from each other to find available energy. Defined, Gibbs free energy is the amount of energy freely available for a system to do work. This is calculable af...
by Nick_OConnell_2F
Sun Jan 22, 2017 6:27 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Entropy and Degeneracy [ENDORSED]
Replies: 3
Views: 403

Re: Entropy and Degeneracy [ENDORSED]

To add on to/simplify what was already said: Entropy is a measure of the disorder or randomness inside of a system, relating to the probability of being at any possible energy state. Degeneracy describes the various possible energy states that said system can be at. The concept of entropy encapsulat...

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