Search found 31 matches
- Sun Mar 19, 2017 1:09 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: 2016 Final Question 4a
- Replies: 2
- Views: 590
Re: 2016 Final Question 4a
Yes, the n refers to the number of electrons that are transferred during the redox reaction.
- Sun Mar 19, 2017 1:00 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Naming priority
- Replies: 3
- Views: 909
Re: Naming priority
Functional groups get higher priority when naming as compared to alkene and alkyne bonds.
- Sun Mar 19, 2017 1:00 pm
- Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
- Topic: Gauche vs Anti
- Replies: 4
- Views: 10876
Re: Gauche vs Anti
No in the examples all given, anti is the most stable conformation
- Sun Mar 19, 2017 12:40 pm
- Forum: General Rate Laws
- Topic: Order of Steps
- Replies: 3
- Views: 751
Re: Order of Steps
The order of the steps does not affect the rate law, only whether the step is fast/slow.
- Sat Mar 18, 2017 12:44 pm
- Forum: *Organic Reaction Mechanisms in General
- Topic: 4.40 (m)
- Replies: 1
- Views: 935
Re: 4.40 (m)
A reaction that has a negtative value of ΔG0 and a large gibbs free energy of activation (ΔG‡) are kinetically controlled because they take a long time to occur and are kinetically stable.
- Sat Mar 18, 2017 12:40 pm
- Forum: *Alkenes
- Topic: Naming Alkenes/Alkynes
- Replies: 2
- Views: 1486
Re: Naming Alkenes/Alkynes
Naming alkenes and alkynes was included in the coursereader so it can possibly be asked on the final
- Wed Mar 15, 2017 4:10 pm
- Forum: *Alkanes
- Topic: Non-Hydrocarbon Substituants
- Replies: 1
- Views: 862
Re: Non-Hydrocarbon Substituants
For halogenic non-hydrocarbon substituents, you take the name of the substituent (ex. fluorine) and drop the -ine ending and add an -o ending instead. For example fluorine becomes fluoro, iodine becomes iodo, etc. For the numbering, the substituents are given priority and their positioning number is...
- Wed Mar 15, 2017 4:08 pm
- Forum: *Alkanes
- Topic: Alkanes vs. Alkenes
- Replies: 1
- Views: 528
Re: Alkanes vs. Alkenes
An alkane is an organic (noncyclic) hydrocarbon with only single C-C bonds. An Alkene is a noncylclic hydrocarbon that has at least 1 C=C (carbon-carbon double bond).
- Wed Mar 15, 2017 4:06 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Formula Sheet for the Final Exam
- Replies: 5
- Views: 1044
Re: Formula Sheet for the Final Exam
The formula sheet that you are given is the one on the back of the periodic table
- Sun Mar 12, 2017 9:19 pm
- Forum: *Calculations Using ΔG° = -RT ln K
- Topic: C-H Bond +4 kJ/mol
- Replies: 4
- Views: 32772
Re: C-H Bond +4 kJ/mol
This value is calculated and is constant for all the C-H bonds
- Sun Mar 12, 2017 12:10 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Final Exam Details and Review Sessions Winter 2017
- Replies: 114
- Views: 26722
Re: Final Exam Details and Review Sessions Winter 2017
Skolli20 wrote:Will we need to know about phenol, esters, amides, nitriles, thiols or thioethers?
Thanks!
These are not covered in the course reader, therefore they will not be included in the final
- Thu Mar 09, 2017 7:09 am
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 3 Winter 2017
- Replies: 183
- Views: 29268
Re: Quiz 3 Winter 2017
304751905 wrote:for #1, why do we need "iso" in front of propyl? wouldn't the 4- signify the branching?
You have to place "iso" in front for the propyl because 4 signifies where the propyl is connected to the decane, not the branching on the propyl substituent itself.
- Sat Mar 04, 2017 2:02 pm
- Forum: *Cycloalkanes
- Topic: Cycloalkane Common Names [ENDORSED]
- Replies: 1
- Views: 544
Cycloalkane Common Names [ENDORSED]
When naming cycloalkanes using common names, when do you use neo/iso vs sec/tert in naming substituents attached to cycloalkanes? Is there a difference or does it not matter?
- Fri Feb 24, 2017 12:33 pm
- Forum: Administrative Questions and Class Announcements
- Topic: 14CL
- Replies: 6
- Views: 1798
14CL
Hi,
Does anyone know whether 14CL can be taken at the same time as 14C or whether it is reccommended to be taken after the completion of 14C?
Does anyone know whether 14CL can be taken at the same time as 14C or whether it is reccommended to be taken after the completion of 14C?
- Sat Feb 18, 2017 4:18 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 2 Winter 2017
- Replies: 160
- Views: 24343
Re: Quiz 2 Winter 2017
Will Quiz 2 also cover materials from before the midterm (in between Quiz 1 and midterm)?
- Wed Feb 15, 2017 8:53 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3055210
Re: Post All Chemistry Jokes Here
The best thing about learning about equilibrium... is that nothing changes!
- Wed Feb 15, 2017 8:45 am
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: standard cell potential at equilibrium
- Replies: 1
- Views: 395
standard cell potential at equilibrium
Hi,
I was just wondering how the standard cell potential is affected at equilibrium. Which cell potential equation can you use to calculate K?
I was just wondering how the standard cell potential is affected at equilibrium. Which cell potential equation can you use to calculate K?
- Tue Jan 31, 2017 10:07 am
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 1 Preparation Answers
- Replies: 130
- Views: 25416
Re: Quiz 1 Preparation Answers
Diego Cortez 2J wrote:Can someone show me the setup for #6? Please and thank you!
(2580) /(2220)= value
Multiply this value by the molar mass of propane
- Sat Jan 28, 2017 7:21 am
- Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
- Topic: Residual Entropy 3rd Law of Thermodynamics
- Replies: 4
- Views: 1142
Residual Entropy 3rd Law of Thermodynamics
In the textbook it highlights that the third law of thermodynamics states that at an absolute temperature of T=0, the entropy of the system approaches 0 because there is no positional or thermal disorder. How does the third law of thermodynamics hold true if there is still entropy in the system in t...
- Sun Jan 22, 2017 2:08 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Enthalpy of Combustion/Formation [ENDORSED]
- Replies: 1
- Views: 362
Enthalpy of Combustion/Formation [ENDORSED]
How can the enthalpy of combustion be used to calculate the enthalpy of formation of reactants?
- Mon Jan 16, 2017 9:00 pm
- Forum: Phase Changes & Related Calculations
- Topic: Adiabatic
- Replies: 1
- Views: 473
Adiabatic
Hil,
One of the questions I was working on refers to an adiabatic wall in the calculation of internal energy. Does anyone know what this means?
One of the questions I was working on refers to an adiabatic wall in the calculation of internal energy. Does anyone know what this means?
- Mon Jan 16, 2017 8:01 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3055210
Re: Post All Chemistry Jokes Here
Joke: “What is the difference between thermodynamics and a stick?
Answer: “A stick has two ends and no beginning. Thermodynamics has two ‘beginnings’ (the first and second law) and no end.”
Answer: “A stick has two ends and no beginning. Thermodynamics has two ‘beginnings’ (the first and second law) and no end.”
- Sun Dec 04, 2016 7:26 am
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: 11.13
- Replies: 2
- Views: 745
Re: 11.13
You include P in the reaction quotient when the value of the reactants and products are gases and are given to you in bars. If they are given to you in molar concentrations then you don't use P
- Sun Nov 20, 2016 8:35 pm
- Forum: Bronsted Acids & Bases
- Topic: Protonation [ENDORSED]
- Replies: 2
- Views: 651
Protonation [ENDORSED]
What does it mean when an acid is deprotonated, or when a base is deprotonated? How is this different from ionization/dissocation?
- Sun Nov 20, 2016 8:34 pm
- Forum: Lewis Acids & Bases
- Topic: Lewis Acids & Bases vs Bronsted Acids & Bases
- Replies: 2
- Views: 793
Lewis Acids & Bases vs Bronsted Acids & Bases
Hi,
I was wondering if someone could please explain to me the difference between a Lewis Acid/Base as compared to a Bronsted Acid/Base?
I was wondering if someone could please explain to me the difference between a Lewis Acid/Base as compared to a Bronsted Acid/Base?
- Thu Nov 10, 2016 10:21 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Period 3 and later bonding
- Replies: 1
- Views: 280
Period 3 and later bonding
Why don't atoms of Period 3 elements and later form multiple bonds as compared to elements such as Carbon in Period 2 that are able to form double bonds?
- Sun Oct 30, 2016 8:53 pm
- Forum: Hybridization
- Topic: DIfference between axial and equatorial lone pairs
- Replies: 1
- Views: 3943
DIfference between axial and equatorial lone pairs
Can someone please explain the difference between axial lone pairs and equatorial lone pairs to me? How can you tell what type of lone pair a given molecule has?
- Sun Oct 23, 2016 2:32 pm
- Forum: Trends in The Periodic Table
- Topic: Electronegativity Difference
- Replies: 1
- Views: 432
Electronegativity Difference
When determining the electronegativity difference between the elements in a compound, does the number of molecules of each element have any effect?
- Sun Oct 16, 2016 10:52 pm
- Forum: Trends in The Periodic Table
- Topic: Aufbau Principle [ENDORSED]
- Replies: 2
- Views: 894
Aufbau Principle [ENDORSED]
Hi,
I'm a little confused on what the Aufbau Principle and Hund's rule are referring to. Can someone please explain these concepts to me?
I'm a little confused on what the Aufbau Principle and Hund's rule are referring to. Can someone please explain these concepts to me?
- Fri Oct 07, 2016 8:04 am
- Forum: Properties of Electrons
- Topic: Atomic Spectra Question [ENDORSED]
- Replies: 3
- Views: 939
Atomic Spectra Question [ENDORSED]
One of the problems asks: In the ultraviolet spectrum of atomic hydrogen, a line is observed at 102.6 nm. Determine the values of n for the initial and final energy levels of the electron that leads to this spectral line. How would you solve this if you have two unkowns: n1(initial n level) and n2(f...
- Wed Oct 05, 2016 12:38 am
- Forum: Properties of Light
- Topic: Threshold Potential
- Replies: 1
- Views: 678
Threshold Potential
How does the threshold potential of different metals determined theoretically?