Search found 10 matches

by Kristen Hazama 1I
Sat Mar 18, 2017 1:10 am
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Winter 2013 Final Q4B
Replies: 1
Views: 330

Winter 2013 Final Q4B

Hi, can someone please explain how to do 4B from the Winter 2013 Final? I don't understand the process of finding the change in concentration as shown in the solutions.
by Kristen Hazama 1I
Sun Mar 12, 2017 7:41 pm
Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
Topic: Staggered vs. Eclipsed
Replies: 2
Views: 358

Re: Staggered vs. Eclipsed

Because the C-H bonds are closer together in the eclipsed conformation, there is more electron repulsion. This leads to higher energy than the staggered conformation where the C-H bonds are further away.
by Kristen Hazama 1I
Sun Mar 05, 2017 12:30 am
Forum: *Alkanes
Topic: Nucleophile vs Electrophile
Replies: 2
Views: 328

Re: Nucleophile vs Electrophile

Also, according to Ashley's peer learning session, nucleophiles have lone pairs and pi bonds while electrophiles do not have a full octet/lack electrons.
by Kristen Hazama 1I
Sun Mar 05, 2017 12:06 am
Forum: *Alkanes
Topic: 2-Iodobutane [ENDORSED]
Replies: 1
Views: 278

2-Iodobutane [ENDORSED]

2-Iodobutane is included in our course reader, but I don't believe Dr. Lavelle mentioned it in class. Can someone explain why Iodine is on the 3rd Carbon, but its name is 2-Iodobutane?
by Kristen Hazama 1I
Sun Feb 26, 2017 5:39 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Boltzmann Distribution and Arrhenius Equation
Replies: 1
Views: 444

Boltzmann Distribution and Arrhenius Equation

On page 75 of the course reader, it says that the "Boltzmann Distribution gives the fraction of collisions with energy Ea or greater at Temp T." Can someone please explain in greater detail what this fraction means? In addition, below the Arrhenius Equation, what does the steric factor mean?
by Kristen Hazama 1I
Sun Feb 19, 2017 11:37 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Course Reader Pages 72 and 73
Replies: 1
Views: 286

Course Reader Pages 72 and 73

Can someone please explain the purpose of the Steady State and Pre-Equilibrium approach as well as steps involved in the Pre-Equlibrium approach? I am having a hard time grasping these concepts.
by Kristen Hazama 1I
Sun Feb 12, 2017 4:22 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: Course reader example pg. 7 electrochemistry
Replies: 4
Views: 565

Re: Course reader example pg. 7 electrochemistry

Faraday's constant on the laminated formula sheet should be 96,485.3 C/mol instead of 96,4853 C/mol. The laminated formula sheet is incorrect and the course reader is correct.
by Kristen Hazama 1I
Sun Feb 05, 2017 6:08 pm
Forum: Balancing Redox Reactions
Topic: Question regarding: "E° + Value means reduction is spontaneous"
Replies: 3
Views: 573

Re: Question regarding: "E° + Value means reduction is spontaneous"

E° must always be positive or else the reaction will not occur. The value comes from the equation E°cell=E°cathode - E°anode. If E° were negative, the reaction would be non-spontaneous because the work would not be done by the system. On page 49, there is the equation deltaG°=-nFE°. If E°were negati...
by Kristen Hazama 1I
Sun Jan 29, 2017 10:18 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: quiz??
Replies: 3
Views: 680

Re: quiz??

Everything up until Friday's lecture on 1/27.
by Kristen Hazama 1I
Sun Jan 22, 2017 11:46 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: 8.31
Replies: 2
Views: 421

Re: 8.31

I believe it was from the Constants and Equations sheet on the back of our periodic tables. It says: Monatomic ideal gas: U=3/2nRT; Cv = 3/2R; Cp = 5/2R. Since the problem says to assume krypton behaves as an ideal gas, I used these equations.

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