Search found 10 matches

by edith_escalante_3G
Sat Mar 18, 2017 3:56 am
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Difference between G(naught) and change in G
Replies: 2
Views: 979

Difference between G(naught) and change in G

What is the difference between ∆G°and just ∆G? It would really help to clarify the concepts behind each of these.
by edith_escalante_3G
Sat Mar 18, 2017 3:51 am
Forum: Calculating Work of Expansion
Topic: Explanation for relationship between equations
Replies: 1
Views: 322

Explanation for relationship between equations

Why is it that for reversible systems use the equations w=-nRTln(V2/V1) and irreversible systems use the equation w=-P*delta V?
by edith_escalante_3G
Sat Mar 18, 2017 3:48 am
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Equilibrium Values
Replies: 2
Views: 366

Equilibrium Values

At equilibrium, why is it that delta H, delta G, and delta S equals 0?
I wanted to clarify the reasoning behind each of these. Also, do these tie into their spontaneous positive or negative values?
by edith_escalante_3G
Thu Mar 09, 2017 5:21 pm
Forum: *ChemDraw
Topic: Drawing Newman structures
Replies: 1
Views: 499

Drawing Newman structures

The course reader states that we should be able to draw Newman structures and visualize molecules from Newman structures. I was wondering what would be the steps or set of rules to follow when it comes to drawing the Newman structures. In addition, how would we be tested on this on the final? Thank ...
by edith_escalante_3G
Sat Mar 04, 2017 2:41 pm
Forum: *Nucleophiles
Topic: Nucleophile Clarification [ENDORSED]
Replies: 1
Views: 273

Nucleophile Clarification [ENDORSED]

The Chapter 4 description of Nucleophile and Electrophile mentions hard and soft nucleophiles. (on page 149 if someone wanted to reference it) I don't quite understand what those are and their differences. If someone could clarify that and some examples would be really helpful as well. Thanks in adv...
by edith_escalante_3G
Fri Feb 24, 2017 9:49 pm
Forum: *Organic Reaction Mechanisms in General
Topic: Biological Example Clarification
Replies: 1
Views: 244

Biological Example Clarification

In lecture today, we discussed how Cholesterol was a biological example of Electrophilic addition reaction. I understand that the HBr species is being added onto the other reactant to ultimately the cholesterol but can someone clarify what happens so that is it possible for this to happen. In additi...
by edith_escalante_3G
Thu Feb 16, 2017 5:47 pm
Forum: Zero Order Reactions
Topic: Zero Order Half-Life Relationship
Replies: 1
Views: 453

Zero Order Half-Life Relationship

Hi, I was reading through the course reader trying to understand half-life reactions. Can someone explain why it says the half-life zero order reaction depends on the initial condition of A. Like what their relationship is?

Thanks in advance!
by edith_escalante_3G
Wed Feb 08, 2017 10:32 pm
Forum: Balancing Redox Reactions
Topic: Half-Reactions
Replies: 2
Views: 338


Hi, I just needed a clarification on half-reactions and the difference between oxidation and reduction half-reactions. It would really be helpful to know how to combine them to produce a balanced redox reaction.

Thank you in advance!
by edith_escalante_3G
Sat Feb 04, 2017 9:18 pm
Forum: Balancing Redox Reactions
Topic: Concentration affect on Cell Potential
Replies: 1
Views: 331

Concentration affect on Cell Potential

Hello, I would just wondering if some could clarify for me how Le Chatelier's Principle is used in the instance of raising a concentration of a reactant/ product to raise a cell potential. During lecture, we were shown this information, I would really appreciate it if one can clarify how that connec...
by edith_escalante_3G
Fri Jan 27, 2017 7:17 pm
Forum: Phase Changes & Related Calculations
Topic: Difference between K and Q
Replies: 1
Views: 317

Re: Difference between K and Q

From what I understood related to today's lecture is that the change of Free Energy from reactants to products is the same as standard free energy +RT In Q. In addition to that K stands for the concentration of the products over the concentration of the reactants at equilibrium. Whereas Q stands for...

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