## Search found 13 matches

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?
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?
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?
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...
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?
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?
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)}...
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: $\Delta H-T\Delta S$; what does this value physically represent in the ongoing reaction?
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...
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?
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?
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?
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.