Search found 14 matches
- Fri Mar 17, 2017 9:43 am
- Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
- Topic: Specific Bond Angles
- Replies: 2
- Views: 565
Re: Specific Bond Angles
You need to know the bond angles for the eclipsed, staggered and gauche conformations.
- Fri Mar 17, 2017 9:42 am
- Forum: *Electrophilic Addition
- Topic: Electrophilic Addition
- Replies: 2
- Views: 1495
Re: Electrophilic Addition
No it doesn't. As long as the hydrogen bonds to a carbon before the bromine atom.
- Fri Mar 17, 2017 9:42 am
- Forum: *Alkenes
- Topic: Alkenes as functional groups??
- Replies: 1
- Views: 1402
Re: Alkenes as functional groups??
Yes the double and triple bonds are considered functional groups.
- Fri Mar 03, 2017 9:51 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3591840
- Fri Mar 03, 2017 9:46 am
- Forum: *Cycloalkenes
- Topic: Geometric Isomers
- Replies: 2
- Views: 1561
Re: Geometric Isomers
Geometric isomers have the same molecular formula but differ in the arrangement of groups with respect to double bonds or rings (eg. trans and cis isomers). Constitutional isomers have the same molecular formula but differ in structure.
- Fri Mar 03, 2017 9:41 am
- Forum: *Alkanes
- Topic: Naming/Numbering Compounds
- Replies: 1
- Views: 421
Re: Naming/Numbering Compounds
The carbonyl functional group gets priority.
- Thu Feb 16, 2017 6:50 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3591840
- Thu Feb 16, 2017 6:46 pm
- Forum: General Rate Laws
- Topic: General Rate Question
- Replies: 2
- Views: 674
Re: General Rate Question
You should answer using the units that are used in the question unless told otherwise.
- Thu Feb 09, 2017 2:28 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3591840
- Thu Feb 09, 2017 2:23 pm
- Forum: Balancing Redox Reactions
- Topic: Balancing Half Reactions for Basic Solution
- Replies: 1
- Views: 370
Re: Balancing Half Reactions for Basic Solution
You use OH- when you have H+ ions that you need to get rid of. If a reaction is occurring in an acidic solution then you would have H+ ions in the solution. But if the reaction is in a basic solution, you need to cancel these H+ ions by adding OH- ions.
- Thu Feb 02, 2017 7:20 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: Relationship between S & T
- Replies: 2
- Views: 635
Re: Relationship between S & T
It's because adding more energy to the system excites the molecules and there is more disorder and chaos, which is what entropy is measuring.
- Thu Jan 26, 2017 9:05 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Standard State Conditions
- Replies: 1
- Views: 580
Re: Standard State Conditions
Use 298 K. However it doesn't really matter which one you use since it won't have a huge effect on the final answer. Also, I'm pretty sure you can use either value as long as you show your work.
- Tue Jan 17, 2017 9:45 pm
- Forum: Phase Changes & Related Calculations
- Topic: Calculating Enthalpy [ENDORSED]
- Replies: 4
- Views: 1081
Re: Calculating Enthalpy [ENDORSED]
Yes, you have to divide by the number of moles to get the standard enthalpy of formation per mole.
- Thu Jan 12, 2017 10:16 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Bond Enthalpies
- Replies: 7
- Views: 957
Re: Bond Enthalpies
Draw the lewis structures for all the products and reactants and compare the bonds. If a bond exists in one of the reactants but doesn't in the products then that bond is broken and if a bond does not exist in one of the reactants but exists in the products then that bond is formed. It's basically a...