Search found 24 matches

by 005290099
Tue Mar 17, 2020 5:57 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1213396

Re: Post All Chemistry Jokes Here

Organic chemistry is hard, I'm having alkynes of trouble
by 005290099
Tue Mar 17, 2020 5:51 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1213396

Re: Post All Chemistry Jokes Here

What do you do with a dead chemist
You Barium!
by 005290099
Tue Mar 17, 2020 5:48 pm
Forum: Student Social/Study Group
Topic: Coronavirus Joke
Replies: 14
Views: 534

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 ;)
by 005290099
Tue Mar 17, 2020 5:46 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1213396

Re: Post All Chemistry Jokes Here

Q:What helped the weak acid molecules go on strike?

A: They unionized.
by 005290099
Tue Mar 17, 2020 5:43 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1213396

Re: Post All Chemistry Jokes Here

Q:What do you call a tooth in a glass of water?
A: A one molar solution.
by 005290099
Sat Mar 14, 2020 1:36 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: 7E.3
Replies: 2
Views: 52

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.
by 005290099
Sat Mar 14, 2020 1:28 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Transition State Theory
Replies: 3
Views: 29

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...
by 005290099
Sat Mar 14, 2020 1:26 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Reaction Profile
Replies: 1
Views: 24

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...
by 005290099
Sat Mar 14, 2020 1:21 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Problems
Replies: 3
Views: 84

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.
by 005290099
Sat Mar 14, 2020 1:18 pm
Forum: Zero Order Reactions
Topic: 0 order
Replies: 6
Views: 75

0 order

What does it mean for a reaction to be Zero Order? I'm still a bit confused about it.
by 005290099
Sat Mar 14, 2020 1:16 pm
Forum: Zero Order Reactions
Topic: Equation with dt
Replies: 2
Views: 45

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.
by 005290099
Sat Mar 14, 2020 1:15 pm
Forum: Conjugate Acids & Bases
Topic: buffer solutions
Replies: 5
Views: 188

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.
by 005290099
Sat Mar 14, 2020 1:13 pm
Forum: Administrative Questions and Class Announcements
Topic: Final time
Replies: 5
Views: 88

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.
by 005290099
Sat Mar 14, 2020 1:12 pm
Forum: Administrative Questions and Class Announcements
Topic: Final- general questions
Replies: 12
Views: 127

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.
by 005290099
Sat Mar 14, 2020 1:08 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: Ka and Kb
Replies: 4
Views: 128

Re: Ka and Kb

Yes that is correct. The are also related in the sense that pKb + pKa = 14
by 005290099
Sat Mar 14, 2020 1:07 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: arrhenius equation
Replies: 4
Views: 25

Re: arrhenius equation

The Arrhenius equation essentially relates the rate constant to temperature and the activation energy of the reaction.
by 005290099
Thu Mar 12, 2020 6:22 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Arrhenius Equation
Replies: 8
Views: 47

Arrhenius Equation

I wasn't in class for the Arrhenius equation part and I was wondering if someone could explain it to me?
by 005290099
Mon Mar 09, 2020 2:36 am
Forum: First Order Reactions
Topic: 7B.17b
Replies: 2
Views: 27

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.
by 005290099
Mon Mar 09, 2020 2:19 am
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: 7E.1
Replies: 1
Views: 18

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.
by 005290099
Sun Mar 08, 2020 9:13 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: 7.11
Replies: 1
Views: 20

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.
by 005290099
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: 71

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?
by 005290099
Wed Feb 12, 2020 3:47 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Pizza Rolls #5
Replies: 5
Views: 92

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 ...
by 005290099
Wed Feb 12, 2020 2:03 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Pizza Rolls #5
Replies: 5
Views: 92

Pizza Rolls #5

Does anyone understand how to do parts A and B of number 5 on the midterm practice?
by 005290099
Wed Feb 12, 2020 11:23 am
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Pizza Rolls #7
Replies: 3
Views: 66

Pizza Rolls #7

Can someone explain how to parts A and B for number 7 on the Pizza Rolls Midterm practice?

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