Search found 13 matches
- Sat Mar 12, 2016 9:58 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3007076
Re: Chemistry Jokes
In honor of a very successful quarter of chemistry jokes from my peers in 14B I would just like to say that personally, I tell bad chemistry jokes because all of the good ones Argon!
- Fri Mar 04, 2016 3:32 pm
- Forum: *Alkanes
- Topic: Halogen substituents
- Replies: 3
- Views: 615
Re: Halogen substituents
Our course reader states that is always goes by alphabetical order so I would go with that.
- Sun Feb 28, 2016 5:16 pm
- Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
- Topic: Vinyl
- Replies: 1
- Views: 458
Re: Vinyl
It is the functional group −CH=CH2
- Thu Feb 25, 2016 4:11 pm
- Forum: *Cycloalkanes
- Topic: Counting Carbons
- Replies: 2
- Views: 727
Re: Counting Carbons
for ring structures, the longest carbon chain is always the ring unless the substituent has a higher number of carbons by itself. For example, if your structure was a cyclohexane ring and a heptane subsistent, the heptane is the longest chain and gets to be the main name.
- Tue Feb 16, 2016 4:36 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Homework Problem 15.71
- Replies: 1
- Views: 857
Re: Homework Problem 15.71
I believe in this scenario, it is clear that the hydroxide is not an intermediate because it is not a product that is then used as a reactant like the other intermediates. Notice that it appears on the reactant side and then the product side where as the actual intermediates appear as products and t...
- Fri Feb 12, 2016 3:34 pm
- Forum: Method of Initial Rates (To Determine n and k)
- Topic: Why K isn't determinant on reactants?
- Replies: 3
- Views: 774
Re: Why K isn't determinant on reactants?
K should go up when the concentration of products increases and it should go down when concentration of reactant increases. Is there a problem where this does not occur?
- Thu Feb 04, 2016 5:11 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Midterm 2011 7/8 D
- Replies: 1
- Views: 419
Re: Midterm 2011 7/8 D
When you used the latter equation, did you remember to also use .02569V instead of .0592V? It should be set up: lnk=(nE)/.02569.
Then, when you plug in .033 and 2 for n and E, you should get 10 for K.
Then, when you plug in .033 and 2 for n and E, you should get 10 for K.
- Thu Feb 04, 2016 4:59 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: HW 14.35 Possible Solution Manual Error?
- Replies: 3
- Views: 751
Re: HW 14.35 Possible Solution Manual Error?
Did you get lnk= (.12v)/(.02569) and then k=106 when you used n=1?
- Tue Feb 02, 2016 4:11 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Double lines in cell diagrams
- Replies: 2
- Views: 623
Re: Double lines in cell diagrams
Yes, the double line represents the salt bridge which will always be present in cell diagrams. However, the single line may not always be there is there is not a phase change between the product and reactant.
- Thu Jan 28, 2016 11:33 pm
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: Useful Summary of Thermodynamic Definitions
- Replies: 55
- Views: 18352
Re: Useful Summary of Thermodynamic Definitions
jennymai96 wrote:So for adiabatic system, the energy as heat is different from the energy as work? Thanks!
energy as heat is always separate from energy as work. For Adiabatic systems, since there is no heat transfer, q=0 and Delta U = w
- Sat Jan 23, 2016 11:54 am
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Molar Heat Capacity Formula of Cp and Cv
- Replies: 2
- Views: 1130
Re: Molar Heat Capacity Formula of Cp and Cv
When calculating Cv and Cp, the same equation is used except for the Cv calculation, you use 3/2R as the ideal gas constant and for the Cp calculation, you use 5/2R are the ideal gas constant. (This is for monoatomic molecules)
- Sat Jan 16, 2016 10:18 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Homework Problem 63
- Replies: 1
- Views: 746
Homework Problem 63
When calculating the enthalpy for the reaction involving H20 (l) as when of the reactants, the solutions manual used the enthalpy of formation value for H20 (aq) instead on both part A and C. Is there a rule that we do not calculate reaction enthalpy with the enthalpy of liquor water, only aqueous?
- Sun Jan 10, 2016 5:59 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Homework Problem 59
- Replies: 1
- Views: 507
Homework Problem 59
For this problem, the solutions manual has an answer which is somewhere in the 2000s and I have done the problem multiple times and ended up with an answer in the 3000s. I checked my work up util the final answer and it all seems to match what the manual has so I am wondering if the solution may be ...