Search found 13 matches

by Daniel_Sands3L
Fri Mar 11, 2016 1:12 am
Forum: *Organic Reaction Mechanisms in General
Topic: Electron Transfers
Replies: 1
Views: 252

Electron Transfers

Are there any tips for drawing in electron transfers between two organic compounds, for instance, in an SN2 reaction?
by Daniel_Sands3L
Fri Mar 04, 2016 1:12 am
Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
Topic: Z, E vs. cis, trans
Replies: 1
Views: 302

Z, E vs. cis, trans

How do you differentiate Z and E vs. cis and trans notation?
by Daniel_Sands3L
Fri Feb 26, 2016 12:27 pm
Forum: *Cycloalkenes
Topic: Numbering for Cycloalkenes
Replies: 2
Views: 551

Numbering for Cycloalkenes

How does the numbering for cycloalkenes work? Do you have the lowest number next to the double bonds or largest substituent?
by Daniel_Sands3L
Thu Feb 18, 2016 10:33 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Determining which order a reaction is
Replies: 1
Views: 312

Re: Determining which order a reaction is

You can also look at the sum of the exponents in the rate law. The rate is given by: Rate=k[A]^n[B]^m[C]^l... and the order will be n+m+l+... . You can also look at what is displayed on a graph. If it is ln(A_{t}) vs. time, you can infer that this is a first order equation. If a graph has \f...
by Daniel_Sands3L
Thu Feb 11, 2016 11:57 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Elementary Reactions
Replies: 1
Views: 280

Elementary Reactions

Do transition states appear in elementary reactions at all?
by Daniel_Sands3L
Wed Feb 03, 2016 1:01 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Problem 14.21c
Replies: 3
Views: 360

Re: Problem 14.21c

Is the Cl- ion in the cell diagram shown as the product of the oxidation half reaction then? Why is it included?
by Daniel_Sands3L
Tue Feb 02, 2016 11:52 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Problem 14.21c
Replies: 3
Views: 360

Problem 14.21c

In problem 14.21c, the problem provides the following cell diagram for us to find the cell potential: Hg_{(l)}|Hg_{2}Cl_{2}_{(s)}|Cl^{-}_{(aq)}||Hg^{2+}_{(aq)}|Hg_{(l)} . How would you perform the oxidation at the anode provided that Hg_{2}Cl_{2}_{(s)}...
by Daniel_Sands3L
Thu Jan 28, 2016 9:24 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Physical Significance of Gibbs Free Energy
Replies: 1
Views: 4130

Physical Significance of Gibbs Free Energy

Gibbs free energy is mathematically defined as: ; what does this value physically represent in the ongoing reaction?
by Daniel_Sands3L
Sat Jan 23, 2016 10:43 pm
Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Topic: Finding molar entropy of benzene
Replies: 1
Views: 319

Re: Finding molar entropy of benzene

It doesn't seem like it would work this way. For instance, in the following link: www2.stetson.edu/~wgrubbs/datadriven/entropyaluminumoxide/entropyal2o3wtg.html, the molar entropy of Aluminum Oxide is found by integrating with respect to temperature the equation: \int_{0}^{T}\frac{C_{P}}{T}dT , wher...
by Daniel_Sands3L
Sat Jan 23, 2016 8:43 pm
Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Topic: Negative Reaction Entropies for Ions
Replies: 1
Views: 299

Negative Reaction Entropies for Ions

Why do ions in solution sometimes have negative entropies? How do they make a system more ordered?
by Daniel_Sands3L
Tue Jan 19, 2016 10:29 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Calculating W
Replies: 1
Views: 195

Calculating W

For calculating W given a particular molecule, do you just determine it based off the number of orientations that the molecule can occupy? For instance, for H2, can we state it only has one orientation and microstate?
by Daniel_Sands3L
Wed Jan 13, 2016 1:23 am
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Change in Internal Energy with Constant Volume
Replies: 1
Views: 287

Change in Internal Energy with Constant Volume

When there is a constant volume, but non constant pressure, how do we calculate change in internal energy? Is it just the heat exchanged between the system and its surroundings?
by Daniel_Sands3L
Wed Jan 13, 2016 1:16 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7831
Views: 1088135

Re: Chemistry Jokes

Why is an electron always depressed?


It's quant-numb and uncertain of its place in the world.

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