Search found 11 matches

by Martin_Sarafyan_2K
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: 317

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.
by Martin_Sarafyan_2K
Sat Mar 11, 2017 4:42 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Catalyst that is used and produced
Replies: 4
Views: 512

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.
by Martin_Sarafyan_2K
Sat Mar 04, 2017 12:45 pm
Forum: *Organic Reaction Mechanisms in General
Topic: Bond angles and shapes [ENDORSED]
Replies: 2
Views: 891

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?
by Martin_Sarafyan_2K
Sat Feb 25, 2017 3:31 pm
Forum: *Electrophiles
Topic: Organic Combinations
Replies: 1
Views: 334

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?
by Martin_Sarafyan_2K
Sat Feb 18, 2017 4:34 pm
Forum: General Rate Laws
Topic: Rate law factors [ENDORSED]
Replies: 2
Views: 369

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...
by Martin_Sarafyan_2K
Sat Feb 11, 2017 8:55 pm
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: Course Reader Example
Replies: 4
Views: 491

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...
by Martin_Sarafyan_2K
Sat Feb 04, 2017 3:09 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: electrolytic solutions
Replies: 2
Views: 305

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?
by Martin_Sarafyan_2K
Sat Jan 28, 2017 7:09 pm
Forum: Calculating Work of Expansion
Topic: No constant P or V
Replies: 1
Views: 244

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?
by Martin_Sarafyan_2K
Sun Jan 22, 2017 6:00 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1153795

Re: Post All Chemistry Jokes Here

What did the assassin give his victim to eat?
A Pb and jelly sandwich
by Martin_Sarafyan_2K
Fri Jan 13, 2017 9:41 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1153795

Re: Post All Chemistry Jokes Here

What did the bartender say when Oxygen, Hydrogen, Sulfur, Sodium, and Phosphorus walked into his Bar?

OH SNaP
by Martin_Sarafyan_2K
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: 186

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?

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