Search found 13 matches
- Thu Mar 16, 2017 10:19 pm
- Forum: *Cycloalkenes
- Topic: Naming cyclopentdiene
- Replies: 2
- Views: 1273
Re: Naming cyclopentdiene
Okay thank you! Would it still be considered correct if I included the numbering and named it as 1,3-cyclopentdiene instead of cyclopentdiene, even though there is only one structure?
- Thu Mar 16, 2017 6:55 pm
- Forum: *Cycloalkenes
- Topic: Naming cyclopentdiene
- Replies: 2
- Views: 1273
Naming cyclopentdiene
On page 29 of the Introduction to Organic Chemistry textbook it says that for Cyclopentdiene, because there is only one possible structure, numbering is not required. How is there only one possible structure? The two possible names I had gotten were 1,3-cyclopentdiene and 1,4-cyclopentdiene. So, how...
- Sun Mar 12, 2017 9:22 pm
- Forum: *Electrophiles
- Topic: Self-test 4.2A
- Replies: 1
- Views: 1273
Self-test 4.2A
On page 149 of the introduction to organic chemistry book, self-test 4.2A asks to draw the lewis structure for the aryl carbocation, 3,5-dimethylbenzene-1-ylium. I understand that it should be a ring structure, but I am confused on how to draw the other parts of the lewis structure based off of the ...
- Sun Mar 05, 2017 11:01 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Reaction Cone
- Replies: 1
- Views: 454
Reaction Cone
On the day we were going over page 74 of the course reader in lecture, Professor Lavelle mentioned a reaction cone, with regards to second order, when going over the example below: 2BrNO (g) ----> [ON--Br-----Br--NO]‡ ----> 2NO (g) + Br2 (g) What exactly is a reaction cone, and how is it related to ...
- Sun Feb 26, 2017 11:02 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: k, temperature, and activation energy
- Replies: 2
- Views: 613
k, temperature, and activation energy
Why is it that at a higher temperature, there are more molecules that have a greater energy, E, than activation energy, Ea?
- Sun Feb 19, 2017 2:20 am
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: QUIZ 2 #11
- Replies: 3
- Views: 779
Re: QUIZ 2 #11
First, I defined k1, the rate constant, for 25 /min at 298K and k2, the other given rate constant, for 35 /min at 350 K. I then defined k3 as the rate constant value I am looking for. After using the Arrhenius equation to find the activation energy, which is 5611 J/mol, you can then plug in the valu...
- Sun Feb 12, 2017 9:37 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: How do you know which is the anode and which is the cathode?
- Replies: 3
- Views: 711
Re: How do you know which is the anode and which is the cathode?
When you look up the standard reduction potential values, you identify which Enot value is the most positive, and which Enot value is the most negative. The most positive Enot value tells you which is being reduced, and the the most negative Enot value tells you which is being oxidized. So for quest...
- Sun Feb 05, 2017 9:05 pm
- Forum: Balancing Redox Reactions
- Topic: Cell potential in class example
- Replies: 1
- Views: 383
Re: Cell potential in class example
You wouldn't multiply E0 of iron by 2 because E0 is an intensive property, which means that the E0 value itself does not change.
- Sat Jan 28, 2017 11:58 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Quiz 1 Preparation, Question #11
- Replies: 1
- Views: 496
Quiz 1 Preparation, Question #11
On question #11 of the quiz 1 preparation (pg. 116 in course reader), it asks: "How many grams of water can be heated from 25.0 degrees Celsius to 100.0 degrees Celsius by the heat released from converting 49.7 g of PbO to Pb?" The converting reaction is PbO (s) + C (s) --> Pb (s) + CO (g)...
- Sun Jan 22, 2017 12:24 am
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Quiz 1 Preparation, Question #4
- Replies: 1
- Views: 626
Quiz 1 Preparation, Question #4
On Quiz 1 Preparation question #4 (page 113) in the course reader, it asks to calculate the standard enthalpy of vaporization of liquid bromine when given the standard enthalpy of sublimation as well as the standard enthalpy of fusion. In order to solve this, would you use the equation: Standard ent...
- Sat Jan 21, 2017 11:20 pm
- Forum: Phase Changes & Related Calculations
- Topic: Quiz Prep #1 question #8
- Replies: 2
- Views: 670
Re: Quiz Prep #1 question #8
Yes, I also got that there is no temperature at which the reaction will be spontaneous.
- Sat Jan 14, 2017 11:13 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: A System at Constant Volume
- Replies: 3
- Views: 816
A System at Constant Volume
Is a system at constant volume an open, closed, or isolated system?
- Sat Jan 14, 2017 5:45 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3590935
Re: Post All Chemistry Jokes Here
All the good periodic table jokes argon?
I don't zinc so!
I don't zinc so!