Search found 11 matches

by Thomas Hui 2J
Thu Mar 16, 2017 1:44 pm
Forum: *Cyclopropanes and Cyclobutanes
Topic: Torisonal vs. Steric Strain
Replies: 2
Views: 613

Torisonal vs. Steric Strain

What is the difference between torsional and steric strain?
by Thomas Hui 2J
Mon Mar 13, 2017 1:58 am
Forum: Administrative Questions and Class Announcements
Topic: Final Exam Details and Review Sessions Winter 2017
Replies: 114
Views: 13623

Re: Final Exam Details and Review Sessions Winter 2017

What pages in the green Introduction to Organic Chemistry book are we responsible for?

What practice problems/homework problems should we do from this textbook?
by Thomas Hui 2J
Mon Mar 06, 2017 3:06 am
Forum: Administrative Questions and Class Announcements
Topic: Quiz 3 Winter 2017
Replies: 183
Views: 15886

Re: Quiz 3 Winter 2017

Do we have to know Electrophilic Aromatic Substitution and Bimolecular Nucleophilic Substitution?

Follow up question:
Is Bimolecular Nucleophilic Substitution the same thing as Nucleophilic Substitution?
by Thomas Hui 2J
Thu Mar 02, 2017 10:57 am
Forum: *Organic Reaction Mechanisms in General
Topic: Types of Organic Reactions
Replies: 1
Views: 236

Types of Organic Reactions

In Quiz 3 Preparation #5, the question asks "What type of reaction is shown above?" How many types of organic reactions are there? And how do we identify them? Follow-up question: Same Question, later the question asks "What is the rate limiting step?" How do you know what the ra...
by Thomas Hui 2J
Sat Feb 18, 2017 12:59 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: QUIZ 2 #11
Replies: 3
Views: 353

Re: QUIZ 2 #11

What I did was first I used the Arrhenius equation to find the Activation Energy, E(a), which I found to be 5611 J/mol. However, I did not know how to solve for the rate constant because I do not know the value of A (rate of collisions) at 770 Kelvin...
by Thomas Hui 2J
Sun Feb 12, 2017 8:58 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Identifying the Anode vs. Cathode in an Equation
Replies: 1
Views: 199

Identifying the Anode vs. Cathode in an Equation

How are you able to know which is the agents being reduced versus oxidized qualitatively?

Example: Midterm 2016, Q8:
A standard electrochemical cell is made by placing a silver electrode into a 1.0M Ag+ solution and a cadmium electrode into a 1.0M Cd(2+) solution; what is the redox reaction?
by Thomas Hui 2J
Fri Feb 10, 2017 11:42 am
Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
Topic: Qualitative ways to find Entropy
Replies: 3
Views: 401

Qualitative ways to find Entropy

How do you look at a molecule and rank their increasing standard entropy?

Example: Midterm W 2013, Q 5 B:
Arrange the following substances in order of increasing standard entropy:
CHF3 (g), CF4 (g), CH3F (g), CH2F2 (g)
by Thomas Hui 2J
Mon Jan 30, 2017 12:39 pm
Forum: Administrative Questions and Class Announcements
Topic: Bruincast Audio Problem
Replies: 16
Views: 1600

Re: Bruincast Audio Problem

Good afternoon Professor, I was wondering if there was any way for BruinCast to be played using Google Chrome? Or is it strictly restricted to other web browsers?
by Thomas Hui 2J
Thu Jan 26, 2017 3:51 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Quiz 1 Prep, #8
Replies: 4
Views: 468

Re: Quiz 1 Prep, #8

In addition to seeing that it is a trick question, you can actually derive the Temperature yourself, to prove mathematically that it is completely impossible. When I did the equation myself, I got -936K as the temperature that it needs to be, so that G will equal 0. As we know, this is impossible, a...
by Thomas Hui 2J
Thu Jan 19, 2017 3:38 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Units of Reaction Enthalpies
Replies: 11
Views: 1436

Re: Units of Reaction Enthalpies

In last Friday's lecture by Dr. Lavelle, it was stated that the units of reaction enthalpies depends strictly on what is being asked. For example, if the question asks for the enthalpy of a formation reaction for a single molecule, it would be kJ/mol. If it does not happen like this, it will simply ...
by Thomas Hui 2J
Fri Jan 13, 2017 10:14 am
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Standard Enthalpy Question
Replies: 4
Views: 340

Re: Standard Enthalpy Question

In addition, the standard state of these diatomic gas molecules is 0, because the most stable form of any naturally occurring molecule of oxygen or bromine is in the diatomic gaseous state. As a result, to use the standard enthalpy of formation for other elements, such as Carbon, you must use the st...

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