Search found 10 matches

by Jessica Pak 2F
Sun Mar 19, 2017 10:12 pm
Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
Topic: When to Determine Chair Conformation
Replies: 3
Views: 952

Re: When to Determine Chair Conformation

Both chair conformations (since they are the same thing) are equally the most stable for cyclohexane. Differences in stability is affected when adding substituents onto 1- and 4-carbons on the chair, where it is preferred to be positioned as equatorial on both carbons instead of axial.
by Jessica Pak 2F
Sun Mar 12, 2017 6:55 pm
Forum: *Alkenes
Topic: Does order matter in Line structure? [ENDORSED]
Replies: 4
Views: 599

Re: Does order matter in Line structure? [ENDORSED]

I don't think direction of where you start your line structure should matter
by Jessica Pak 2F
Sun Mar 05, 2017 5:31 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: determining the catalyst
Replies: 4
Views: 557

Re: determining the catalyst

If I'm not mistaken, in a set of reaction steps, you will find a catalyst to be first found on the reactants side, then subsequently found on the products side in the next step and vice versa for intermediates. This is because catalysts are not "used up" in a reaction but intermediates are...
by Jessica Pak 2F
Sun Feb 26, 2017 11:58 pm
Forum: First Order Reactions
Topic: Question About the 1st Order REaction Rate Law
Replies: 2
Views: 501

Re: Question About the 1st Order REaction Rate Law

I think that reactant concentrations will always be used unless the reverse reaction is used! (so technically the products are now the reactants)
by Jessica Pak 2F
Sun Feb 19, 2017 11:41 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: What is n? [ENDORSED]
Replies: 8
Views: 1041

Re: What is n? [ENDORSED]

n will always be number of moles (of molecules, or in this case, e-). I think that it should be assumed that the value of n should be the number of electrons in the balanced equation, which could sometimes also be the same number in the half reaction.
by Jessica Pak 2F
Sun Feb 12, 2017 11:43 pm
Forum: Balancing Redox Reactions
Topic: Acidic vs. Basic Solutions
Replies: 2
Views: 325

Re: Acidic vs. Basic Solutions

For a shortcut to balance basic solutions, you can also start off balancing the equations like acidic solutions (with H+), and then add an equal amount of OH- on both sides to produce H2O and leftover OH-. Hope that helps :)
by Jessica Pak 2F
Sun Feb 05, 2017 8:55 pm
Forum: Balancing Redox Reactions
Topic: Electrochemistry Videos
Replies: 3
Views: 447

Re: Electrochemistry Videos

Hi! I would recommend watching Chad's videos (you can google his website). The videos aren't too long (about an hour per topic) but they're pretty helpful!
by Jessica Pak 2F
Sat Jan 28, 2017 8:56 pm
Forum: Calculating Work of Expansion
Topic: Problem 8.3
Replies: 3
Views: 330

Re: Problem 8.3

Hi Coco! For your volume calculations (which would most likely be in cm^3), you would need to use the conversion factor 1L/1000cm^3, which would give you a final volume of -0.14L. Hope that helps :)
by Jessica Pak 2F
Sun Jan 22, 2017 8:01 am
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Chapter 8 problem #9
Replies: 2
Views: 389

Re: Chapter 8 problem #9

Hi! On the equations sheet that came with the course reader it says that 1L*atm = 101.325 J :)
by Jessica Pak 2F
Sat Jan 14, 2017 11:44 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Extensive Property vs. Intensive Property
Replies: 2
Views: 355

Re: Extensive Property vs. Intensive Property

Just to add on, think of an extensive property as one that is affected by on the external, so typically when the size of the sample changes, so does the value. Intensive properties are considered to be "better" because since they remain constant when other factors change, it can be used to...

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