Search found 9 matches

by Sean_Yue_1E
Mon Mar 20, 2017 8:45 am
Forum: *Alcohols
Topic: Priority in Cyclos [ENDORSED]
Replies: 2
Views: 1027

Re: Priority in Cyclos [ENDORSED]

You would organize it as Functional group, bonds, sidechains in order of priority I think!
by Sean_Yue_1E
Mon Mar 20, 2017 8:43 am
Forum: *Alkanes
Topic: How to name the Alcohol
Replies: 4
Views: 938

Re: How to name the Alcohol

I think it's preferable to name it propan-2-ol because it more clearly indicates the location of the alcohol group. When there are more substituents and bonds naming will be more convoluted.
by Sean_Yue_1E
Mon Mar 20, 2017 8:38 am
Forum: *Alkanes
Topic: Final 2013
Replies: 4
Views: 847

Re: Final 2013

For naming chains with over 10 carbons, I think you just have to put the 10th value ahead of 1's value for example hexa deca would be 16 penta deca would be 15 etc. If there is no numbering for the ol/ OH group then you can assume it's on number 1. Hexadecanol can also be written as hexadecan-1-ol.
by Sean_Yue_1E
Mon Mar 20, 2017 8:27 am
Forum: *Alcohols
Topic: Hydroxy vs Alcohol?
Replies: 2
Views: 811

Re: Hydroxy vs Alcohol?

I think it's a hydroxl group when it's not the highest priority functional group. When it is, it's an alcohol group.
by Sean_Yue_1E
Mon Mar 20, 2017 8:22 am
Forum: *Alkanes
Topic: Naming Help
Replies: 7
Views: 1110

Re: Naming Help

You can try the sum rule, organizing alphabetically doesn't always work for example "1,3 ethyl 2,2 dimethylcyclopentane" (unless you ignore the prefix). Generally I just remember it as bigger stuff first (with the exception of cyclo stuff)
by Sean_Yue_1E
Sun Feb 12, 2017 9:14 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Midterm winter 2013 question #4
Replies: 3
Views: 379

Re: Midterm winter 2013 question #4

@Coco Is the question you're asking about Q3? But I think the Hvap(water)*m(water) is the q(boiling) part of the equation q(water) + q(boiling) = -q(katana) so it's the thermal energy of boiling the water.
by Sean_Yue_1E
Sun Feb 05, 2017 9:11 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Gibbs Free Energy
Replies: 1
Views: 561

Re: Gibbs Free Energy

Hi, for this question you need to use the formula E0cell = E(cathode) - E(anode) and dG = -nEF! For the first question start by looking for the reduction potentials of both Bi and Zn. a) 3 Zn(s) +2Bi^3+(aq)--> 3 Zn^2+(aq) + 2Bi(s) E(cell) = E(cathode) - E(anode) = Bi reduction potential ---> 0.215v ...
by Sean_Yue_1E
Sun Jan 29, 2017 4:56 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Spontaneous Reactions
Replies: 4
Views: 612

Re: Spontaneous Reactions

A spontaneous chemical reaction is exergonic when it is spontaneous. This means that work is being done by the system on its surroundings, and the ΔG in this case from ΔG = ΔH = TΔS will be negative.
by Sean_Yue_1E
Sun Jan 22, 2017 5:03 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: General Definition of Entropy [ENDORSED]
Replies: 1
Views: 370

Re: General Definition of Entropy [ENDORSED]

As I understand, entropy affects whether or not a chemical reaction will proceed to the right (ex. in the case of A + B -> C + D). When enthalpy decreases and entropy increases the reaction is favored. I think Gibbs Free Energy (ΔG = ΔH - TΔS) relates the two concepts because it uses the change in e...

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