Search found 11 matches
- Sat Mar 18, 2017 7:40 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Galvanic cell calculations
- Replies: 2
- Views: 517
Galvanic cell calculations
when pertaining to galvanic cells and their concentrations increasing or decreasing is it products over reactants, or simply reduction over oxidation? How can we determine what additional chemical cause an increase or decrease of E from the 2 concentrations.
- Sat Mar 11, 2017 4:42 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: Catalyst that is used and produced
- Replies: 4
- Views: 853
Re: Catalyst that is used and produced
The rate determining step is the slow step, if the catalyst is within the slow step, then it affects the rate itself because it lowers Ae. Even, if it isnt in the overall reaction, it affects the rate because of its presence.
- Sat Mar 04, 2017 12:45 pm
- Forum: *Organic Reaction Mechanisms in General
- Topic: Bond angles and shapes [ENDORSED]
- Replies: 2
- Views: 1906
Bond angles and shapes [ENDORSED]
When writing the transition state mech, should we include diagonals and straight lines representing the angle of the bond breaking or being created?
- Sat Feb 25, 2017 3:31 pm
- Forum: *Electrophiles
- Topic: Organic Combinations
- Replies: 1
- Views: 572
Organic Combinations
How do we know which chain receives the chemical that is being added to it? Is it simply any double bonds, or is there a certain position it needs to be in contact with?
- Sat Feb 18, 2017 4:34 pm
- Forum: General Rate Laws
- Topic: Rate law factors [ENDORSED]
- Replies: 2
- Views: 599
Rate law factors [ENDORSED]
So if rate laws are affected by energy, frequency, and orientation of collisions, meaning temperature, catalyst, pressure, and concentration, is there any other situation where the rate constant K and rate laws are affected? K isn't affected by concentration, right, because its only affected by temp...
- Sat Feb 11, 2017 8:55 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Course Reader Example
- Replies: 4
- Views: 912
Re: Course Reader Example
While graphite becoming diamond is spontaneous, it is still a endothermic process, while the energy at 25C and 1atm is very little, it will still form in a very very very slow manner just as the previous comment said. I think its just a matter of the first law of thermodynamics. I read something abo...
- Sat Feb 04, 2017 3:09 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: electrolytic solutions
- Replies: 2
- Views: 507
electrolytic solutions
Why does the conductance of a E solution increase with temperature, but metals decrease? Also, do we have to know anything about metallic conduction vs electrolytic conduction?
- Sat Jan 28, 2017 7:09 pm
- Forum: Calculating Work of Expansion
- Topic: No constant P or V
- Replies: 1
- Views: 387
No constant P or V
Will there ever be questions of W, delta S, etc where you will have no constant p or V. If so, what are some examples within the book which have these problems?
- Sun Jan 22, 2017 6:00 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3591388
Re: Post All Chemistry Jokes Here
What did the assassin give his victim to eat?
A Pb and jelly sandwich
A Pb and jelly sandwich
- Fri Jan 13, 2017 9:41 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3591388
Re: Post All Chemistry Jokes Here
What did the bartender say when Oxygen, Hydrogen, Sulfur, Sodium, and Phosphorus walked into his Bar?
OH SNaP
OH SNaP
- Fri Jan 13, 2017 9:36 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Bond Enthalpy Question
- Replies: 1
- Views: 354
Bond Enthalpy Question
When you take into account a double bond breaking like a C=C, and the product has a C-C formation. Should you use the bond breaking KJ of a double bond breaking or a just a single bond (and vice-versa for bond forming), since it becomes a single bond in the product and why?