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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.
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.
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)
- Sun Feb 12, 2017 9:14 pm
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: Midterm winter 2013 question #4
- Replies: 3
- Views: 297
@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.
- Sun Feb 05, 2017 9:11 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Gibbs Free Energy
- Replies: 1
- Views: 408
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 ...
- Sun Jan 29, 2017 4:56 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Spontaneous Reactions
- Replies: 4
- Views: 502
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.
- Sun Jan 22, 2017 5:03 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: General Definition of Entropy [ENDORSED]
- Replies: 1
- Views: 290
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...