Search found 12 matches
Search found 12 matches • Page 1 of 1
- Sat Mar 18, 2017 3:48 pm
- Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
- Topic: Final 2014 #7E and 7F
- Replies: 1
- Views: 640
For 7E, I understand why C(OH)3 is opposite CN in the Newmann projection. But for 7F, why is Cl instead of CH3 opposite CN in the Newmann projection?
I was under the impression that alkenes were in the quiz 3, since they are integral to electrophilic addition? check with your TA. Alkynes and cycloalkenes should not be Thank you! Alkenes did appear on Quiz 3 for electrophilic addition, but we did not have to name or draw them ourselves (which was...
#3. "Consider the following reaction mechanism Step 1: (CH3)3C-Br ->k1 <-k1' (CH3)3C+ +Br- Step 2: (CH3)3C+ + OH- ->k2 (CH3)3C-OH Given that k1 << k2" I know that Step 1 is the rate limiting step b/c the rate constant of Step 1 is much smaller than that of Step 2, hence Step 1 is the slow ...
- Sun Feb 26, 2017 8:32 pm
- Forum: Administrative Questions and Class Announcements
- Topic: 14CL
- Replies: 6
- Views: 1183
Hi, Does anyone know whether 14CL can be taken at the same time as 14C or whether it is reccommended to be taken after the completion of 14C? Are you currently taking 14B and 14BL together this quarter? I think it is recommended to take 14C and 14CL not concurrently b/c the course material may over...
- Sun Feb 19, 2017 9:00 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Homework 15.79
- Replies: 4
- Views: 576
Chem_Mod wrote:Thermodynamic control means usually the activation barrier is low, kinetic control is when activation barrier is high.
Can you explain this in more detail please?
- Sun Feb 12, 2017 10:36 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: 14.33
- Replies: 3
- Views: 484
When the question asks to identify whether Tl^+ will disproportionate in an aqueous solution, the answer is no because Gibss free energy is positive (Given: +215kj/mol) and not spontaneous, but also K <1, right? Is this a right reasoning? I know that there is also an equation that related Gibbs Fre...
- Sun Feb 05, 2017 7:56 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Writing Cell Diagram?
- Replies: 2
- Views: 441
Does the order in which we write the reactants and products of the anode and cathode in the cell diagram matter?
- Sun Jan 22, 2017 8:17 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Chapter 8 Question 49
- Replies: 1
- Views: 310
According to the textbook, "most thermochemical data are reported for 298.15 K (25 C)", so I think it is safe to assume that the temperature convention for our HW problems is 298.15 K (25 C), unless otherwise stated.
- Sat Jan 14, 2017 8:59 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Difference between Bond Enthalpies & Standard Enthalpies of Formation
- Replies: 1
- Views: 219
This question may have been asked, but I am new to Chemistry Community and am overwhelmed by all the posts on the forums. May someone please explain the difference between bond enthalpies and standard enthalpies of formation ? For example, why is the bond enthalpy for F2 equal to 158 kJ/mol, but the...