Search found 14 matches
- Sun Mar 19, 2017 1:26 am
- Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
- Topic: Chair conformation
- Replies: 3
- Views: 1594
Re: Chair conformation
Equatorial is more stable than axial conformation so I would say put it at an equatorial position
- Sun Mar 19, 2017 1:25 am
- Forum: *Calculations Using ΔG° = -RT ln K
- Topic: Arrhenius Graphs
- Replies: 3
- Views: 2009
Re: Arrhenius Graphs
Idk if this is what you're asking but, From the 'progress of reaction' energy graph, the activation energy is the difference between the energy of the transition state and the reactants,I believe.
- Tue Mar 14, 2017 8:40 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Ethane vs. ethene heat capacity?
- Replies: 3
- Views: 1605
Re: Ethane vs. ethene heat capacity?
What are the degrees of freedom as it relates to ethane and ethene ? How is this calculated?
- Wed Mar 08, 2017 5:25 pm
- Forum: *Alkanes
- Topic: IuPac Naming
- Replies: 1
- Views: 634
IuPac Naming
So I was looking over some structural naming and I was a bit confused about when to use -iso...it seems as though you can you it when there are two substituents branching from a single carbon, however some examples say that instead you would write it as dimethyl. So is -iso and -dimethyl interchange...
- Wed Mar 08, 2017 10:42 am
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 3 Winter 2017
- Replies: 183
- Views: 29974
Re: Quiz 3 Winter 2017
For iuPac naming, when dealing with a cycloalkane, how do you determine which molecule to number as #1, say the cycloalkane has two substituents...for example, a cyclohexane with substiuents of CH3 and Br?
- Tue Feb 28, 2017 4:28 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Entropy
- Replies: 2
- Views: 603
Entropy
Explain this to me conceptually,
how can you determine the sign of entropy when just given a reaction and no numbers? For example, the midterm gives the rxn: CO2(g)+H2O(l)-->H2CO3(aq).
How do you go about this?
how can you determine the sign of entropy when just given a reaction and no numbers? For example, the midterm gives the rxn: CO2(g)+H2O(l)-->H2CO3(aq).
How do you go about this?
- Mon Feb 20, 2017 8:48 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 2 Winter 2017
- Replies: 160
- Views: 25259
Re: Quiz 2 Winter 2017
Do we have to know how to use the pre-equilibrium approach since that is where we left off or no?
Thanks.
Thanks.
- Tue Feb 14, 2017 1:22 pm
- Forum: Balancing Redox Reactions
- Topic: Redox
- Replies: 4
- Views: 864
Redox
When balancing redox equations, once you get to the half reactions, if you want the equations to be acid or base, do you use the same method of adding H2O and H+ in order to balance the equations?
- Sat Feb 11, 2017 6:28 pm
- Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
- Topic: Quiz Question:Calculating delta H--amino acid bonds
- Replies: 2
- Views: 688
- Thu Feb 09, 2017 11:20 am
- Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
- Topic: Quiz Question:Calculating delta H--amino acid bonds
- Replies: 2
- Views: 688
Quiz Question:Calculating delta H--amino acid bonds
Okay, so when given amino acid bonds, are we supposed to cancel out bonds on the products and reactants side in order to work with the bond enthalpies given in the chart? Can someone just explain how to solve this problem... >.<
- Thu Feb 02, 2017 10:29 am
- Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
- Topic: Higher Entropy
- Replies: 2
- Views: 821
Higher Entropy
If two molecules have the same molecular geometry, what determines which molecule has a higher entropy?
- Sun Jan 29, 2017 9:36 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3862488
Re: Post All Chemistry Jokes Here
Wouldn't even wish this on my worst enemy.
- Sat Jan 21, 2017 3:17 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3862488
Re: Post All Chemistry Jokes Here
If Fe= Iron....then does,
Female= Iron Man?
Female= Iron Man?
- Sat Jan 14, 2017 10:17 am
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Standard Enthalpies of Formation
- Replies: 1
- Views: 469
Standard Enthalpies of Formation
Do we use the formula of the sum of products minus the sum of reactants only for standard enthalpies of formation? Why do we not just add all enthalpies, similar to how we solve problems using Hess's law?