Search found 30 matches
- Sat Mar 16, 2019 9:46 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Homework problem 7D1
- Replies: 5
- Views: 906
Re: Homework problem 7D1
I believe we have to memorize it.
- Sat Mar 16, 2019 9:44 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: Catalysts
- Replies: 2
- Views: 519
Re: Catalysts
A homogeneous catalyst is a catalyst of the same phase and a heterogeneous catalyst is a catalyst of a different phase.
- Sat Mar 16, 2019 9:44 pm
- Forum: Ideal Gases
- Topic: Nitrogen gas
- Replies: 5
- Views: 673
Re: Nitrogen gas
Yes
- Sat Mar 16, 2019 9:34 pm
- Forum: Administrative Questions and Class Announcements
- Topic: LYNDON'S PORK RAMEN REVIEW
- Replies: 37
- Views: 7592
Re: LYNDON'S PORK RAMEN REVIEW
Thank you!
- Sat Mar 16, 2019 9:33 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Cv or Cp
- Replies: 5
- Views: 692
Re: Cv or Cp
We use Cv when at constant volume and Cp at constant pressure.
- Sat Mar 16, 2019 9:32 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Nernst Equation
- Replies: 2
- Views: 482
Re: Nernst Equation
To calculate Ecell
- Sat Mar 16, 2019 9:29 pm
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: Isometric/Isochoric
- Replies: 11
- Views: 1404
Re: Isometric/Isochoric
Rogelio Bazan 1D wrote:Danielle Hoekstra 1C wrote:Is isochoic another way to say a closed system? Are they interchangeable?
Please, someone, correct me if I am wrong, but I think that isochoric is the same thing as Isometric. As in a closed system.
thanks!
- Sat Mar 16, 2019 9:27 pm
- Forum: Second Order Reactions
- Topic: units
- Replies: 5
- Views: 669
Re: units
1/Msec
- Sat Mar 16, 2019 9:26 pm
- Forum: First Order Reactions
- Topic: units
- Replies: 3
- Views: 613
Re: units
1/sec
- Sat Mar 16, 2019 9:23 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Saying Thank You to Dr. Lavelle
- Replies: 490
- Views: 564033
Re: Saying Thank You to Dr. Lavelle
Dear Dr. Lavelle,
Just wanted to say thank you for all of your resources both online and in-person learning sessions. I really enjoyed this class!
Thanks!
Just wanted to say thank you for all of your resources both online and in-person learning sessions. I really enjoyed this class!
Thanks!
- Sat Mar 16, 2019 9:21 pm
- Forum: General Rate Laws
- Topic: rate of consumption
- Replies: 2
- Views: 648
Re: rate of consumption
Here is a website I used to help me understand this:
https://chemistry.stackexchange.com/que ... e-negative
https://chemistry.stackexchange.com/que ... e-negative
- Sat Mar 16, 2019 9:15 pm
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: Isometric/Isochoric
- Replies: 11
- Views: 1404
Re: Isometric/Isochoric
Is isochoic another way to say a closed system? Are they interchangeable?
- Sat Mar 16, 2019 9:13 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Ecell Always Positive
- Replies: 4
- Views: 1332
Re: Ecell Always Positive
Because the E°cell value of the cathode is positive and anode is negative, the Ecell will be positive as it is equal to the cathode minus the negative anode.
- Sat Mar 16, 2019 9:02 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Conjugate Base and Acid
- Replies: 4
- Views: 590
Re: Conjugate Base and Acid
A strong acid has a weak conjugate base just as a strong base has a weak conjugate acid.
- Sat Mar 16, 2019 8:57 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Nernst Equation
- Replies: 3
- Views: 567
Re: Nernst Equation
the Nernst equation is Useful when trying to calculate the cell potential (Ecell)
- Sat Mar 16, 2019 8:51 pm
- Forum: General Science Questions
- Topic: Questions on Final
- Replies: 2
- Views: 882
Re: Questions on Final
I’m not sure exactly but in class he said to expect something similar to the midterm.
- Sat Mar 16, 2019 7:36 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Relation between Q and Gibbs Free Energy
- Replies: 4
- Views: 765
Re: Relation between Q and Gibbs Free Energy
Artin Allahverdian 2H wrote:To clarify if Q>K the reaction would want to shift in the reverse way to make more reactants in order to reach K. Since this will make the reverse rxn more favorable than the forward rxn, the forward rxn will not be spontaneous, and thus, delta G is 0.
That’s very helpful! Thanks again
- Sat Mar 16, 2019 7:33 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Relation between Q and Gibbs Free Energy
- Replies: 4
- Views: 765
Re: Relation between Q and Gibbs Free Energy
Artin Allahverdian 2H wrote:Greater than 0 because it will be non spontaneous
Thanks!
- Sat Mar 16, 2019 7:31 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Relation between Q and Gibbs Free Energy
- Replies: 4
- Views: 765
Relation between Q and Gibbs Free Energy
If the reaction quotient (Q) is greater than the equilibrium constant what does that indicate for Gibbs free energy?
- Sat Mar 16, 2019 7:26 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: 7E3 7th edition
- Replies: 2
- Views: 356
Re: 7E3 7th edition
7E.4 The presence of a catalyst provides a reaction pathway in which the activation energy of a certain reaction is reduced from 125 kJ/mol to 75 kJ/mol. a) by what factor does the rate of the reaction increase at 298K, all other factors being equal? b) by what factor would the rate change if the re...
- Sat Mar 16, 2019 7:23 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: 7E3 7th edition
- Replies: 2
- Views: 356
7E3 7th edition
How do we do this problem? The solution manual is misleading regarding the substitution of Ea.
- Wed Mar 13, 2019 11:01 am
- Forum: Student Social/Study Group
- Topic: Studying for the Final
- Replies: 25
- Views: 2819
Re: Studying for the Final
Doing lots of practice problems
- Wed Mar 13, 2019 10:59 am
- Forum: Student Social/Study Group
- Topic: Equations Sheet
- Replies: 4
- Views: 855
Re: Equations Sheet
Nope! It’s the same equations sheet we have been supplied for the tests.
- Wed Mar 13, 2019 10:58 am
- Forum: Student Social/Study Group
- Topic: Final
- Replies: 5
- Views: 875
Re: Final
Information on the review sessions is located on Lavelles Website, same place where he posted midterm information! :)
- Mon Feb 25, 2019 10:01 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3633743
Re: Post All Chemistry Jokes Here
I would tell another chemistry joke, but all the good ones Argon
- Mon Feb 25, 2019 9:58 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3633743
Re: Post All Chemistry Jokes Here
Old chemists never die, they just stop reacting.
- Mon Feb 25, 2019 9:56 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Reducing agent/oxidizing agent
- Replies: 5
- Views: 555
Re: Reducing agent/oxidizing agent
The anode is the electrode that electricity flows into. Cathode is the electrode where the electricity flows out of. An anode is positive and a cathode is negative
- Mon Feb 25, 2019 9:51 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Test 2
- Replies: 4
- Views: 533
Re: Test 2
Balancing redox reactions, cell potential, electrical work and how it relates to free energy etc... Material covered in week 6 and 7 up to (but not including) Nernst equation.
- Sun Jan 27, 2019 1:24 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Advice from a Medical Student [ENDORSED]
- Replies: 297
- Views: 418398
Re: Advice from a Medical Student [ENDORSED]
Thank you Ashley!
- Sun Jan 27, 2019 1:19 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: units for standard reaction enthalpy
- Replies: 2
- Views: 216
Re: units for standard reaction enthalpy
The units for reaction enthalpy is also kj/mol