Search found 10 matches
- Sun Mar 19, 2017 12:45 pm
- Forum: General Rate Laws
- Topic: Order of Steps
- Replies: 3
- Views: 748
Re: Order of Steps
I don't think the order matters, you just always use the reactants in slow step in your rate reaction
- Sun Mar 19, 2017 12:15 pm
- Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
- Topic: Newman Projection
- Replies: 2
- Views: 1510
Re: Newman Projection
The question will specify which 2 carbon atoms to draw in the Newman projection and then you draw the remaining chain depending what carbon it is bonded to. It is helpful to draw out the molecule before doing the Newman projection.
- Sun Mar 19, 2017 12:07 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: units of the rate of reaction
- Replies: 7
- Views: 1007
units of the rate of reaction
are the units of rate always the same ( M/s)? and is it just the units of k that change when the order of reaction changes?
- Sun Mar 12, 2017 11:14 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Intermediates in pre equilibrium
- Replies: 8
- Views: 2715
Re: Intermediates in pre equilibrium
If there is 2 transition states with 2 steps involved in a reaction, can there only be 1 intermediate or is it possible to have 2 intermediates?
- Wed Mar 08, 2017 9:24 am
- Forum: *Complex Reaction Coordinate Diagrams
- Topic: Activation energy line on reaction diagram
- Replies: 5
- Views: 1673
Re: Activation energy line on reaction diagram
for 4.30 in the 'introduction to organic chemistry'. How do we know that an activation energy of 125KJmol-1 will not occur at room temperature?
- Sun Mar 05, 2017 9:29 pm
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: Catalyst
- Replies: 16
- Views: 2360
Re: Catalyst
if a reaction rate increases by a factor of 1000 in the presence of a catalyst at 25 degrees, what does it mean? and how does this change the approach to equations involved in activation energy?
- Mon Feb 20, 2017 9:16 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3009246
- Sun Feb 12, 2017 10:36 pm
- Forum: Concepts & Calculations Using First Law of Thermodynamics
- Topic: Work
- Replies: 1
- Views: 484
Work
If ΔT=0 and w=100J. ΔU = q+w =0 which means q= -w= -1000J.
Why does q=-1000 not q=0? because if ΔT=0 and you use the equation q=nCΔT wouldn't q=0 not q=-1000J?
Why does q=-1000 not q=0? because if ΔT=0 and you use the equation q=nCΔT wouldn't q=0 not q=-1000J?
- Wed Feb 01, 2017 9:49 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Quiz 1 Preparation Answers
- Replies: 130
- Views: 25219
Re: Quiz 1 Preparation Answers
for #1 I don't understand why the answer is 310J not -310J
- Sun Jan 22, 2017 1:47 pm
- Forum: Phase Changes & Related Calculations
- Topic: units for pressure [ENDORSED]
- Replies: 2
- Views: 502
units for pressure [ENDORSED]
For all equations used in thermodynamics, do we always have to convert pressure into atm(atmospheres)? and if so, do we need to know the conversions for the exams? for example from Torrs to atm?