Search found 24 matches
- Tue Mar 17, 2020 5:57 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3701410
Re: Post All Chemistry Jokes Here
Organic chemistry is hard, I'm having alkynes of trouble
- Tue Mar 17, 2020 5:51 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3701410
Re: Post All Chemistry Jokes Here
What do you do with a dead chemist
You Barium!
You Barium!
- Tue Mar 17, 2020 5:48 pm
- Forum: Student Social/Study Group
- Topic: Coronavirus Joke
- Replies: 14
- Views: 1838
Re: Coronavirus Joke
Got a corona virus pickup line for all you players out there:
You can't spell quarantine without u, r, a, q, t ;)
You can't spell quarantine without u, r, a, q, t ;)
- Tue Mar 17, 2020 5:46 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3701410
Re: Post All Chemistry Jokes Here
Q:What helped the weak acid molecules go on strike?
A: They unionized.
A: They unionized.
- Tue Mar 17, 2020 5:43 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3701410
Re: Post All Chemistry Jokes Here
Q:What do you call a tooth in a glass of water?
A: A one molar solution.
A: A one molar solution.
- Sat Mar 14, 2020 1:36 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: 7E.3
- Replies: 2
- Views: 313
Re: 7E.3
You basically calculate the rate constants for both the catalyzed and uncatalyzed reaction. You then divide the rate constant for the catalyzed reaction by the rate constant for the uncatalyzed reaction. For part b, you do the same thing just at the higher temp.
- Sat Mar 14, 2020 1:28 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: Transition State Theory
- Replies: 3
- Views: 306
Re: Transition State Theory
In transition state theory (TST) an activated molecule is formed during the reaction at the transition state between forming products from reactant.This differs from collision theory because collision theory applies only to gas phase reactions while transition state theory is a generalization to rea...
- Sat Mar 14, 2020 1:26 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Reaction Profile
- Replies: 5
- Views: 419
Re: Reaction Profile
Reaction profiles are constructed by comparing the initial potential energy of a reactants and the final potential energy of the products. These profiles are represented in the form of graphs that plot the energetic trajectory of a reaction. The graph will also include an activation energy hump. The...
- Sat Mar 14, 2020 1:21 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Problems
- Replies: 3
- Views: 343
Re: Problems
It's likely that the type of system isn't going to be the focal point of a thermodynamics problem. The problem will most likely involve reversible/irreversible expansion and changes in entropy, enthalpy, and Gibbs free energy.
- Sat Mar 14, 2020 1:18 pm
- Forum: Zero Order Reactions
- Topic: 0 order
- Replies: 6
- Views: 503
0 order
What does it mean for a reaction to be Zero Order? I'm still a bit confused about it.
- Sat Mar 14, 2020 1:16 pm
- Forum: Zero Order Reactions
- Topic: Equation with dt
- Replies: 6
- Views: 551
Re: Equation with dt
That is just a way to represent change in rate at certain points in time. We likely won't need to use it since it involves calculus.
- Sat Mar 14, 2020 1:15 pm
- Forum: Conjugate Acids & Bases
- Topic: buffer solutions
- Replies: 5
- Views: 597
Re: buffer solutions
He did have a buffer-type question on the midterm so I think its safe to say that he might have something of that sort on the final.
- Sat Mar 14, 2020 1:13 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final time
- Replies: 5
- Views: 501
Re: Final time
I do not think so but he is going to send out an email with all the information today so I think we should just wait for him to lay out the details later today.
- Sat Mar 14, 2020 1:12 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final- general questions
- Replies: 12
- Views: 938
Re: Final- general questions
The final is going to be open-note, open book final. No monitoring will take place. Professor Lavelle said that it should be coming out today and I believe he said it would be 6 questions to complete in 3-4 hours, however that time limit isn't fully decided on yet.
- Sat Mar 14, 2020 1:08 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: Ka and Kb
- Replies: 4
- Views: 515
Re: Ka and Kb
Yes that is correct. The are also related in the sense that pKb + pKa = 14
- Sat Mar 14, 2020 1:07 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: arrhenius equation
- Replies: 4
- Views: 349
Re: arrhenius equation
The Arrhenius equation essentially relates the rate constant to temperature and the activation energy of the reaction.
- Thu Mar 12, 2020 6:22 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: Arrhenius Equation
- Replies: 8
- Views: 590
Arrhenius Equation
I wasn't in class for the Arrhenius equation part and I was wondering if someone could explain it to me?
- Mon Mar 09, 2020 2:36 am
- Forum: First Order Reactions
- Topic: 7B.17b
- Replies: 2
- Views: 230
Re: 7B.17b
This is simply another way of representing the concentration of A in terms of Ao. its a way to simplify the the subsequent calculations and keep them in terms of variables.
- Mon Mar 09, 2020 2:19 am
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: 7E.1
- Replies: 1
- Views: 153
Re: 7E.1
The catalyst does not affect the deltaHnaught. The catalysts only lower the activation by providing an alternative energy pathway, therefore the standard enthalpy remains unchanged.
- Sun Mar 08, 2020 9:13 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: 7.11
- Replies: 1
- Views: 136
Re: 7.11
You can determine the slow step by looking at the reactants of the elementary equations. In step 2, you can substitute in NO + NO for N2O2 which, when you find the reaction rate, matches the given one.
- Fri Mar 06, 2020 5:31 am
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Nernst Equation for Concentration Cells
- Replies: 6
- Views: 408
Nernst Equation for Concentration Cells
Can someone explain to me how concentration cells work? I'm having trouble understanding example 6N.3 and how the thought process works there?
- Wed Feb 12, 2020 3:47 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Pizza Rolls #5
- Replies: 5
- Views: 399
Re: Pizza Rolls #5
For Part A, you have to add up three different delta S values to find the total change of entropy in the system. This includes deltaS for H2 container expansion, deltaS of Krypton gas for container expansion, and deltaS based on temperature change. Since entropy is a state function, this allows us ...
- Wed Feb 12, 2020 2:03 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Pizza Rolls #5
- Replies: 5
- Views: 399
Pizza Rolls #5
Does anyone understand how to do parts A and B of number 5 on the midterm practice?
- Wed Feb 12, 2020 11:23 am
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Pizza Rolls #7
- Replies: 3
- Views: 345
Pizza Rolls #7
Can someone explain how to parts A and B for number 7 on the Pizza Rolls Midterm practice?