Search found 32 matches

Sat Mar 16, 2019 10:31 pm
Forum: Administrative Questions and Class Announcements
Topic: Yekan Final review slides and solutions 0312
Replies: 8
Views: 750

Re: Yekan Final review slides and solutions 0312

Thank you, found this to be really good practice
Sat Mar 16, 2019 10:30 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cell Diagram
Replies: 4
Views: 135

Re: Cell Diagram

Interesting, thank you for the response
Sat Mar 16, 2019 9:35 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cell Diagram
Replies: 4
Views: 135

Re: Cell Diagram

What would be the reason to use Hg over Pt?
Sat Mar 16, 2019 9:28 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Vant Hoff equation on formula sheet
Replies: 6
Views: 644

Re: Vant Hoff equation on formula sheet

You can also derive the Vant Hoff equation from the delta G standard equations on the constants and formulas sheet if that helps
Sat Mar 16, 2019 9:24 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Free Expansion
Replies: 3
Views: 371

Free Expansion

How do we know if a reaction is undergoing free expansion?
Sat Mar 16, 2019 9:05 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Deriving Enthalpy Equations
Replies: 3
Views: 350

Deriving Enthalpy Equations

What is the best way to derive equations for enthalpy from the sheet of constants and formulas we are given on exams?
Sat Mar 16, 2019 8:25 pm
Forum: Student Social/Study Group
Topic: Solutions for Tests 1 and 2
Replies: 7
Views: 625

Re: Solutions for Tests 1 and 2

Some of the questions that were on the tests have been discussed on here in the relevant boards. If theres one in particular that youre interested in, you might be able to find a post about it
Sat Mar 16, 2019 7:37 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Test 2 Q 7 [ENDORSED]
Replies: 5
Views: 586

Re: Test 2 Q 7[ENDORSED]

I was wondering how to come to this conclusion, thank you
Sat Mar 16, 2019 7:36 pm
Forum: Van't Hoff Equation
Topic: pH and van’t hoff
Replies: 6
Views: 626

Re: pH and van’t hoff

Thank you, this was a big help in figuring out where I went wrong on the Vant Hoff problem on test 2
Sat Mar 16, 2019 3:47 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: K1 vs K2
Replies: 2
Views: 165

Re: K1 vs K2

Thank you for the video, it was very instructive
Sat Mar 16, 2019 3:23 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Equation
Replies: 9
Views: 625

Re: Equation

I thought for that equation that A ends up getting canceled out during the derivation and that's why it isn't present
Sat Mar 16, 2019 2:58 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: 6th edition, 15.63
Replies: 2
Views: 122

Re: 6th edition, 15.63

I was very confused by this answer as well, is the consensus just that it was a solutions manual error?
Sat Mar 16, 2019 2:34 pm
Forum: First Order Reactions
Topic: 6th edition 15.29
Replies: 2
Views: 270

Re: 6th edition 15.29

Ah I see, thank you for the explanation
Fri Mar 15, 2019 8:58 pm
Forum: First Order Reactions
Topic: 6th edition 15.29
Replies: 2
Views: 270

6th edition 15.29

The solutions manual stats that the equation should be set up as ln(.015/.005). I'm confused as to why that is the order rather than (.005/.015). Would someone mind pointing me in the right direction
Fri Mar 15, 2019 2:34 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8263
Views: 1445523

Re: Post All Chemistry Jokes Here

In a sports relay race, a chemical kinetics specialist runs slowly, and his group loses the race.

When the chemical kinetics specialist is asked why he ran slowly, his reply was “I always wanted to be the significant rate determining step”.
Fri Mar 15, 2019 2:30 pm
Forum: Administrative Questions and Class Announcements
Topic: Final Questions
Replies: 10
Views: 611

Re: Final Questions

I'm not sure, so far I have mostly just done homework questions to prepare for finals. Are the online assessments on Lavelle's website?
Wed Mar 13, 2019 8:32 pm
Forum: Administrative Questions and Class Announcements
Topic: Final Questions
Replies: 10
Views: 611

Re: Final Questions

Where can you look at past finals?
Wed Mar 13, 2019 8:31 pm
Forum: General Science Questions
Topic: Free Expansion
Replies: 3
Views: 339

Re: Free Expansion

Interesting, thank you for the responses. Real-world examples help me contextualize topics
Sat Mar 09, 2019 8:30 pm
Forum: General Science Questions
Topic: Free Expansion
Replies: 3
Views: 339

Free Expansion

What are some real-world examples of free expansion?
Fri Mar 08, 2019 11:16 am
Forum: Calculating Work of Expansion
Topic: Keywords for each equation
Replies: 4
Views: 359

Re: Keywords for each equation

That is good to know, thank you
Fri Mar 08, 2019 11:14 am
Forum: *Free Energy of Activation vs Activation Energy
Topic: Definition of Transition State
Replies: 1
Views: 501

Definition of Transition State

What is the best definition of a transition state? Is it just the peak of the activation energy curve?
Tue Mar 05, 2019 8:36 pm
Forum: Calculating Work of Expansion
Topic: Keywords for each equation
Replies: 4
Views: 359

Keywords for each equation

I'm still struggling to know when to use the correct equation, would someone mind sharing keywords they look for to determine which equation to use?
Mon Mar 04, 2019 8:07 pm
Forum: Administrative Questions and Class Announcements
Topic: Week 9 HW
Replies: 6
Views: 282

Re: Week 9 HW

Thank you for the replies, Ill just do kinetics to be safe
Mon Mar 04, 2019 11:10 am
Forum: Administrative Questions and Class Announcements
Replies: 5
Views: 310

I suppose to be safe I will wait til the tests are returned. There is just one question in particular Id love some input on.
Mon Mar 04, 2019 11:07 am
Forum: Administrative Questions and Class Announcements
Topic: Week 9 HW
Replies: 6
Views: 282

Week 9 HW

Can we do electrochem problems for week 9 homework?
Sun Mar 03, 2019 8:40 pm
Forum: Administrative Questions and Class Announcements
Replies: 5
Views: 310

Are we allowed to discuss questions that were on test 2?
Mon Jan 21, 2019 3:10 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Units for equilibrium constants
Replies: 2
Views: 129

Re: Units for equilibrium constants

Thank you!
Mon Jan 21, 2019 1:15 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Units for equilibrium constants
Replies: 2
Views: 129

Units for equilibrium constants

What are the units for equilibrium, acidity and base constants?
Thu Jan 17, 2019 9:29 pm
Forum: Administrative Questions and Class Announcements
Topic: Posts on Chemistry Community
Replies: 3
Views: 117

Re: Posts on Chemistry Community

Fair enough, that makes me feel a bit better. Thanks for the replies
Thu Jan 17, 2019 4:25 pm
Forum: Administrative Questions and Class Announcements
Topic: Posts on Chemistry Community
Replies: 3
Views: 117

Posts on Chemistry Community

I know that posting on chemistry community accounts for 30 points of our grade, but I am a little confused as to the specifics. Do we need to make 3 posts a week to get 3 points a week? Do we just need to make 30 posts over the course of the quarter? Does any post/reply count for points?
Wed Jan 09, 2019 7:45 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: 6th edition, 11.23
Replies: 4
Views: 170

Re: 6th edition, 11.23

Thanks guys, I had a feeling I was missing something
Wed Jan 09, 2019 7:32 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: 6th edition, 11.23
Replies: 4
Views: 170

6th edition, 11.23

the question used values of 500.0, 0.031, 0.495, 0.145 but the answer in the solutions manual gave the answer as 1.4.

I just wanted to make sure I brushed up on my sig figs but shouldn't the answer have 3 sig figs instead of two?