Search found 13 matches

by ribal_daniel_3H
Mon Mar 13, 2017 11:37 am
Forum: *Alkanes
Topic: Numbering
Replies: 6
Views: 497

Re: Numbering

The way I see it is that we should strive to have the longest carbon chain. Also you want the first number to be the lowest I think. So if you have a 2 or 4-methyl and a 2 or 4-ethyl on a pentane, you would write 2-ethyl-4methylpentane.
by ribal_daniel_3H
Mon Mar 13, 2017 11:32 am
Forum: *Alkanes
Topic: Reaction Profiles
Replies: 3
Views: 360

Re: Reaction Profiles

It's also helpful to remember that if a lot of bonds are broken, or a very strong bond is broken, theres a higher chance it's endergonic since it absorbs a lot of energy to break that bond. Therefore the products would be above the reactants.
by ribal_daniel_3H
Sun Mar 05, 2017 10:54 pm
Forum: *Alkanes
Topic: Naming Organic Molecules
Replies: 5
Views: 462

Re: Naming Organic Molecules

Also to add on to the last comment, I believe you can only make one bend in order to get the longest chain.
by ribal_daniel_3H
Sun Feb 19, 2017 11:07 pm
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: Kinetic
Replies: 3
Views: 352

Re: Kinetic

I believe you use the slower rate, because a reaction will only go as fast as its slow rate. I would fact check what I said though.
by ribal_daniel_3H
Sun Feb 19, 2017 11:06 pm
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: Kinetic
Replies: 3
Views: 352

Re: Kinetic

I believe you use the slower rate, because a reaction will only go as fast as its slow rate. I would fact check what I said though.
by ribal_daniel_3H
Sat Feb 11, 2017 10:15 pm
Forum: Balancing Redox Reactions
Topic: Midterm 2013, Q7
Replies: 5
Views: 421

Re: Midterm 2013, Q7

Okay, I think I understand now. With all of the logic provided, I think I will be able to figure it out during the midterm. Thank you all :]
by ribal_daniel_3H
Sat Feb 11, 2017 9:55 pm
Forum: Balancing Redox Reactions
Topic: Midterm 2013, Q7
Replies: 5
Views: 421

Midterm 2013, Q7

Q7 "Calculate K and dG at 298K for the following redox reaction. Hint: Identify the two half-reactions and show a balanced equation to receive full credit Mn^2+aq + Br2(l) ----> MnO4^-aq + Br^-(aq) The question gives us the half reactions for MnO4 and Br2 and adds them up, but flips the half re...
by ribal_daniel_3H
Sun Feb 05, 2017 9:43 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Anode/Cathode
Replies: 4
Views: 405

Re: Anode/Cathode

The way I see a salt bridge's purpose is to keep the anode from shrinking too much, since it is always giving electrons to the cathode. (Check other sources to make sure I am right though). The salt bridge maintains neutrality and allows the reaction to keep going. On the anode side it keeps it from...
by ribal_daniel_3H
Sun Jan 29, 2017 8:16 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Quiz 1 Prep Question
Replies: 1
Views: 296

Re: Quiz 1 Prep Question

It just had 5kj to begin with, Luigi. The plus was probably there to mark it's existence, because a negative sign would make you think that 5kj were removed. Cheers.
by ribal_daniel_3H
Sun Jan 22, 2017 8:58 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Reference to Dr. Lavelle's lecture notes
Replies: 2
Views: 445

Re: Reference to Dr. Lavelle's lecture notes

I believe this can happen because the energy will just be transferred into a different form, and very slowly. The entropy will increase. I think a good example of this is the expansion and explosion of stars into supernovas.
by ribal_daniel_3H
Sun Jan 15, 2017 10:59 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Heat Capacity
Replies: 8
Views: 455

Re: Heat Capacity

I think that a lower heat capacity means that it can reach a certain temperature without needing as much heat. Therefore something with a high heat capacity would need more heat to reach the same temperature, and that would take a longer time. That is my reasoning for why the slope of a heating curv...
by ribal_daniel_3H
Sun Jan 15, 2017 10:47 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Heat Capacity
Replies: 8
Views: 455

Re: Heat Capacity

I believe this is because it is able to heat up at a faster rate.

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