Search found 17 matches
- Thu Mar 03, 2016 4:42 pm
- Forum: *Cycloalkenes
- Topic: SELF TEST 1.11A b)
- Replies: 2
- Views: 730
Re: SELF TEST 1.11A b)
When numbering double bonds, you need to number both carbons in the double bond consecutively. Therefore, carbon atoms 1 and 2 in the ring will be two of the carbons involved in one of the double bonds (for this problem specifically, you would want to start with the carbon in the double bond with th...
- Tue Mar 01, 2016 1:07 pm
- Forum: *Electrophiles
- Topic: AlCl3
- Replies: 2
- Views: 750
Re: AlCl3
AlCl3 is an electrophile particularly because the Al is electron deficient and needs more electrons.
- Tue Mar 01, 2016 10:51 am
- Forum: *Electrophiles
- Topic: AlCl3 Friedal Crafts Alkylation
- Replies: 3
- Views: 2029
Re: AlCl3 Friedal Crafts Alkylation
You're not wrong, the arrow looks as if the single bond is the area of electron abundance. However, the Cl is the nucleophile in the Friedal Crafts Alkylation and is attacking the electron deficient Al in AlCl3.
- Tue Mar 01, 2016 10:43 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3938508
Re: Chemistry Jokes
Have you heard about the chemist who read a book about helium?
They couldn’t put it down
They couldn’t put it down
- Thu Feb 18, 2016 9:05 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Low Activation Energy
- Replies: 1
- Views: 598
Low Activation Energy
Can someone explain why temperature doesn't change the rate very much if a reaction has a low activation energy?
- Fri Feb 05, 2016 10:43 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Cell potential
- Replies: 1
- Views: 674
Re: Cell potential
Because if you add two of the same reaction, you won't get double the cell potential, which violates the definition of a state function.
- Fri Feb 05, 2016 8:16 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3938508
Re: Chemistry Jokes
Q: What do you do with a dead chemist?
A: Barium
A: Barium
- Fri Feb 05, 2016 8:02 pm
- Forum: Balancing Redox Reactions
- Topic: Balancing Redox reactions
- Replies: 3
- Views: 898
Balancing Redox reactions
When balancing the half reactions, why do you not double the cell potential when you multiply an equation by 2? I know we aren't supposed to, but can someone explain why we don't?
- Thu Jan 14, 2016 9:07 pm
- Forum: Phase Changes & Related Calculations
- Topic: Enthalpy
- Replies: 3
- Views: 797
Enthalpy
Under what circumstances does q=△H?
- Fri Jan 08, 2016 3:23 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: 8.10 units question
- Replies: 3
- Views: 784
Re: 8.10 units question
You want to convert it to Joules!
- Sun Nov 29, 2015 8:28 pm
- Forum: Lewis Acids & Bases
- Topic: Acid & Bases
- Replies: 2
- Views: 911
Acid & Bases
Is it possible for an acid/base to be strong in one reaction but weak in another?
- Wed Nov 18, 2015 11:33 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: 2013 Quiz 3 Preparation #10
- Replies: 10
- Views: 1865
Re: 2013 Quiz 3 Preparation #10
So we don't need to convert from bars to a different unit? If so to what unit?
- Wed Nov 11, 2015 3:59 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Coordination Number & Ligands
- Replies: 1
- Views: 496
Re: Coordination Number & Ligands
Yes because ligands represent ions binding to the central atom which forms a coordination complex.
- Sun Nov 01, 2015 6:18 pm
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Bond Order
- Replies: 4
- Views: 940
Re: Bond Order
304579397 wrote:What does a bond order of 0 signify ?
A bond order of 0 means that the molecule is unstable and does not exist.
- Sun Oct 25, 2015 8:54 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Lewis structures
- Replies: 11
- Views: 2347
Re: Lewis structures
The best way to go about that would be to add another bond such as a double bond or a triple bond and take away a lone pair or vice-versa.
- Sun Oct 18, 2015 8:34 pm
- Forum: Ionic & Covalent Bonds
- Topic: Lewis Acid-Base RXN
- Replies: 1
- Views: 524
Lewis Acid-Base RXN
Are Boron and Aluminum the only elements involved in Lewis Acid-Base reactions?
- Sat Oct 03, 2015 9:56 pm
- Forum: Significant Figures
- Topic: How much of the atomic mass of an element should be used?
- Replies: 5
- Views: 1485
Re: How much of the atomic mass of an element should be used
Since you are dividing 40.9 g, which has three sig figs, by the mass of Carbon, you would use 12.01 rather than 12.011 because 12.01 also has three sig figs.