https://www.quora.com/What-is-the-order ... n-of-ozone
This explains the rate law for ozone
Search found 53 matches
- Mon Mar 12, 2018 8:27 pm
- Forum: General Rate Laws
- Topic: Decomposition of Ozone
- Replies: 1
- Views: 277
- Sat Mar 10, 2018 10:49 am
- Forum: First Order Reactions
- Topic: Units of Reactions. [ENDORSED]
- Replies: 5
- Views: 964
Re: Units of Reactions. [ENDORSED]
What helps most is just knowing that rate must be defined as mol/L*S so whatever reactants you have and what they multiply out to, just convert K to make sure the final units are in mol/L*S
- Sat Mar 10, 2018 10:47 am
- Forum: General Rate Laws
- Topic: Fractional Rate Law [ENDORSED]
- Replies: 4
- Views: 1901
Re: Fractional Rate Law [ENDORSED]
https://chemistry.stackexchange.com/questions/49088/what-does-a-fractional-order-of-reaction-mean-for-the-mechanism This website might help with it. On page 621 the textbook talks about fractional order reactions. I'm not entirely sure, but if the fractional order is in the denominator, it means tha...
- Wed Mar 07, 2018 12:47 pm
- Forum: First Order Reactions
- Topic: Question 15.23
- Replies: 3
- Views: 489
Question 15.23
How do you solve for c? The question is determine the rate constant for each of the following 1st-order reactions, in each case expressed for the rate of loss
(c)2A-->B + C,given that[A]0 = 0.153mol L 1 and that after 115 s the concentration of B rises to 0.034 mol L 1.
(c)2A-->B + C,given that[A]0 = 0.153mol L 1 and that after 115 s the concentration of B rises to 0.034 mol L 1.
- Mon Mar 05, 2018 1:46 pm
- Forum: Kinetics vs. Thermodynamics Controlling a Reaction
- Topic: Kinetics [ENDORSED]
- Replies: 2
- Views: 365
Kinetics [ENDORSED]
For lecture today Lavelle showed a graph with reactants and products with two activation energies. Can we automatically assume that the graph with a larger activation energy is the rate determining elementary step?
- Mon Mar 05, 2018 1:41 pm
- Forum: Zero Order Reactions
- Topic: Will we need to know how to derive equations? [ENDORSED]
- Replies: 9
- Views: 1199
Re: Will we need to know how to derive equations? [ENDORSED]
Will we need to know how to derive the equation involving kforward divided by kreverse
- Mon Mar 05, 2018 1:39 pm
- Forum: General Rate Laws
- Topic: Homework Problem 15.19C
- Replies: 5
- Views: 616
Re: Homework Problem 15.19C
Can anyone help me solve for this answer? 15.63 The rate constant of the reaction between CO2 and OH in aqueous solution to give the HCO3 ion is 1.5 1010 L mol 1 s 1 at 25 C. Determine the rate constant at blood temperature (37 C), given that the activation energy for the reaction is 38 kJ mol 1.
- Mon Mar 05, 2018 1:31 pm
- Forum: General Rate Laws
- Topic: catalytic reaction
- Replies: 5
- Views: 634
Re: catalytic reaction
Hydrogen peroxide will decompose into water and oxygen gas. Two molecules of hydrogen peroxide will produce two molecules of water and one molecule of oxygen. A catalyst of potassium permanganate can be used to speed up this process. Adding potassium permanganate to the hydrogen peroxide will cause ...
- Mon Mar 05, 2018 1:14 pm
- Forum: Method of Initial Rates (To Determine n and k)
- Topic: determining order
- Replies: 3
- Views: 411
Re: determining order
What would our units be for a reaction that is half order?
- Mon Mar 05, 2018 1:09 pm
- Forum: Zero Order Reactions
- Topic: What role do coefficients play?
- Replies: 3
- Views: 471
Re: What role do coefficients play?
When calculating the rate constant you use the molar coefficients. For k it's products/reactants and each species is raised to its molar coefficients.
- Mon Mar 05, 2018 1:08 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Kinetics Test
- Replies: 3
- Views: 470
Re: Kinetics Test
Sorry so that means that lecture from today (March 5th) won't be on the test?
- Mon Mar 05, 2018 1:06 pm
- Forum: Experimental Details
- Topic: spectroscopy
- Replies: 2
- Views: 657
Re: spectroscopy
Also using spectroscopy you are able to measure and plot wavelength vs. intensity of light. Finding the optimum wavelength tells you what wavelength the species has the maximum absorbance of the light.
- Mon Mar 05, 2018 1:00 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2981477
Re: Post All Chemistry Jokes Here
Two chemists go into a bar. The first one says "I think I'll have an H2O." The second one says "I think I'll have an H2O too" — and he died.
- Mon Mar 05, 2018 12:58 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2981477
Re: Post All Chemistry Jokes Here
I had a sodium joke but NA(h)
- Mon Mar 05, 2018 12:54 pm
- Forum: Method of Initial Rates (To Determine n and k)
- Topic: Overall reaction order
- Replies: 3
- Views: 517
Re: Overall reaction order
I'm pretty sure we won't be tested on the reaction order being a fraction.
- Mon Mar 05, 2018 12:53 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Bimolecular Reactions [ENDORSED]
- Replies: 2
- Views: 430
Re: Bimolecular Reactions [ENDORSED]
species I believe just means any type of molecule. It could be A+B or A+A (a and b representing molecules) in the reaction. Bimolecular just means two molecules having to collide.
- Mon Mar 05, 2018 12:50 pm
- Forum: First Order Reactions
- Topic: k
- Replies: 16
- Views: 1563
Re: k
Reaction A: k = 2.3 M-1s-1
Reaction B: k = 1.8 Ms-1
Reaction C: k = 0.75 s-1
How do we know which one is a zero order reaction just given the units?
Reaction B: k = 1.8 Ms-1
Reaction C: k = 0.75 s-1
How do we know which one is a zero order reaction just given the units?
- Mon Mar 05, 2018 12:47 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: k'
- Replies: 4
- Views: 525
Re: k'
are the units for the forward reaction k the same as the overall reaction k units?
- Mon Mar 05, 2018 12:43 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: 0 order
- Replies: 6
- Views: 2550
Re: 0 order
In the presence of a catalyst the graph would be the same if it's a zero order reaction. it would be a linear plot.
- Thu Feb 22, 2018 5:53 pm
- Forum: Balancing Redox Reactions
- Topic: 14.17
- Replies: 3
- Views: 1064
14.17
14.17 (a) Write balanced half-reactions for the redox reaction of an acidified solution of potassium permanganate and iron(II) chloride. (b) Write the balanced equation for the cell reaction and devise a galvanic cell to study the reaction (write its cell diagram). I am stuck on just simply trying t...
- Wed Feb 07, 2018 1:07 pm
- Forum: Amphoteric Compounds
- Topic: Amphoteric compounds
- Replies: 3
- Views: 1009
Re: Amphoteric compounds
If it reacts as a base or an acid the compound is amphoteric. A great example is water
- Wed Feb 07, 2018 1:03 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: exothermic
- Replies: 5
- Views: 701
Re: exothermic
The flask is the surroundings and the reaction is the system. When there's an exothermic reaction, the flask will heat up. If there's an endothermic reaction the flask will cool down because heat is going to the system and away from the surroundings
- Fri Feb 02, 2018 12:05 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Spontaneous
- Replies: 14
- Views: 1925
Re: Spontaneous
Also it’s spontaneous when delta h is negative and delta s is positive
- Fri Feb 02, 2018 12:01 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: 9.7
- Replies: 7
- Views: 682
Re: 9.7
I’m confused about what does the fraction means
- Wed Jan 24, 2018 5:51 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Week 3 Test Topic is endorsed
- Replies: 37
- Views: 4740
Re: Week 3 Test Topic is endorsed
understanding the concepts just means like being able to interpret what the equations solve for?
- Wed Jan 24, 2018 5:49 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Midterm
- Replies: 2
- Views: 307
Re: Midterm
I'm pretty sure it will be just the full coverage of 8 and 9
- Wed Jan 24, 2018 5:49 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Equations for the test [ENDORSED]
- Replies: 1
- Views: 145
Equations for the test [ENDORSED]
I know lavelle mentioned that we shouldn't be focused on the problems that are very math heavy, but which equations beside q=mcat should we be completely familiar with for the exam?
- Thu Jan 18, 2018 1:03 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Equations for gases using R
- Replies: 4
- Views: 296
Re: Equations for gases using R
Go over it in the book because it will be on our next exam
- Thu Jan 18, 2018 1:01 pm
- Forum: Phase Changes & Related Calculations
- Topic: HW question
- Replies: 5
- Views: 499
Re: HW question
I don't think we have gone to the end of chapter 8 yet, but yes all 14 should be from chapter 8
- Wed Jan 10, 2018 3:23 pm
- Forum: Phase Changes & Related Calculations
- Topic: Endo and Exothermic Ways to Remember
- Replies: 28
- Views: 11405
Re: Endo and Exothermic Ways to Remember
Also exothermic is when there's a negative delta H compared to endothermic where theres a positive delta H because endothermic heat is being added.
- Wed Jan 10, 2018 3:21 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Cp,m --> Cv,m
- Replies: 2
- Views: 580
Re: Cp,m --> Cv,m
I'm pretty sure in the book they derive it, Just google it and you can see how they derive that equation.
- Thu Dec 07, 2017 10:36 pm
- Forum: Bronsted Acids & Bases
- Topic: identifying based on structure
- Replies: 4
- Views: 526
Re: identifying based on structure
Ag+ is a lewis acid and F- is a lewis base. Ag+ can accept an electron and F- can donate an electron
- Thu Dec 07, 2017 10:34 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Arrhenius acids and bases
- Replies: 2
- Views: 339
Re: Arrhenius acids and bases
An Arrhenius acid is a substance that dissociates in water to form hydrogen ions or protons. In other words, it increases the number of H+ ions in the water. In contrast, an Arrhenius base dissociates in water to form hydroxide ions, OH-. I'm pretty sure we should be comfortable with Lewis, bronsted...
- Tue Nov 28, 2017 1:05 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Electron Arrangement and Molecular Shape
- Replies: 4
- Views: 519
Re: Electron Arrangement and Molecular Shape
Do we need to know the difference between electron geometry and molecular geometry for the test?
Re: Thio- ?
think about which one is the most electronegative
- Tue Nov 28, 2017 1:03 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Lone Pair effect on bond angle
- Replies: 2
- Views: 1057
Re: Lone Pair effect on bond angle
Just think about how seesaw and bent are formed because of the strong repulsion of lone pairs. They effect the molecular shape of the molecule.
- Tue Nov 28, 2017 1:01 pm
- Forum: Ideal Gases
- Topic: Test 4
- Replies: 2
- Views: 302
Test 4
For test number 4 should we be comfortable with any of the gas laws?
- Wed Nov 15, 2017 12:52 pm
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Bond Angles
- Replies: 8
- Views: 1536
Re: Bond Angles
Do you think it's fine for us to just put bond angles with greater than or less than signs? like the bond angle is <109.5
- Wed Nov 15, 2017 12:50 pm
- Forum: Sigma & Pi Bonds
- Topic: Sigma and pi
- Replies: 12
- Views: 1550
Sigma and pi
In every double bond, is it always 1 sigma and 1 pi bond?
- Wed Nov 15, 2017 12:49 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Electron geometry vs molecular geometry
- Replies: 2
- Views: 264
Electron geometry vs molecular geometry
Do we need to know for this upcoming test about identifying a molecules electron geometry vs its molecular geometry?
- Mon Nov 06, 2017 12:30 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Midterm Materials [ENDORSED]
- Replies: 7
- Views: 813
Re: Midterm Materials [ENDORSED]
We don't need to buy a blue book for the midterm.
- Mon Nov 06, 2017 12:29 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Midterm Materials [ENDORSED]
- Replies: 7
- Views: 813
Re: Midterm Materials [ENDORSED]
Effective nuclear charge deals is the equation: Zeff = z(atomic number) - S(shielding e-). By subtracting these two you will derive the effective nuclear charge
- Fri Nov 03, 2017 12:24 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Problem for a Peer Learning Session
- Replies: 3
- Views: 448
Re: Problem for a Peer Learning Session
The s subshell will lose it's electrons instead of taking it from the d orbital
- Fri Nov 03, 2017 12:21 pm
- Forum: Lewis Structures
- Topic: Midterm
- Replies: 4
- Views: 288
Re: Midterm
Yes the midterm is on fundamentals to chapter 3
- Fri Nov 03, 2017 12:10 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: For the test vsepr and lewis
- Replies: 3
- Views: 323
For the test vsepr and lewis
For the Chapter 4 test should we be comfortable with naming the lewis structure as well as the VSEPR name. For example, for CH4 do we need to know that it's tetrahedral and trigonal pyramidal?
- Wed Oct 25, 2017 4:29 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Difference between subshell and orbital [ENDORSED]
- Replies: 9
- Views: 2623
Re: Difference between subshell and orbital [ENDORSED]
A subshell is a group of orbitals with properties such as shape. An orbital can contain 2 electrons that have opposite spin.
- Wed Oct 25, 2017 4:24 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Electron Configuration writing
- Replies: 8
- Views: 813
Re: Electron Configuration writing
I learned in high school that we can fill electron orbitals using the Aufbau principle 2 different ways. One way is you can write electron configurations with the orbitals in order of filling. The other way, which Lavelle wants us to do, is writing electron configurations in order of increasing prin...
- Thu Oct 19, 2017 12:19 pm
- Forum: Properties of Light
- Topic: EM spectrum
- Replies: 6
- Views: 758
Re: EM spectrum
I noticed that one of the questions asked us what visible color is of the wavelength 486. Should I know the exact ranges of when purple becoming blue since the answer was blue?
- Thu Oct 19, 2017 12:16 pm
- Forum: Properties of Electrons
- Topic: Rydberg's formula
- Replies: 6
- Views: 1043
Re: Rydberg's formula
I'm also confused as to when to make the value of r negative. I know lavelle mentioned that it was negative if energy was released, but I have yet to see a problem where it needed to be negative.
- Thu Oct 12, 2017 3:40 pm
- Forum: Properties of Light
- Topic: Wavelengths and Frequency of Electromagnetic Radiation [ENDORSED]
- Replies: 7
- Views: 1026
Re: Wavelengths and Frequency of Electromagnetic Radiation [ENDORSED]
The only ones we need to know is that visible light is from 400nm to 700nm. We don't need to know what UV or gamma radiation's wavelengths are. I'm sure it'll be good to know what order it goes in though.
- Thu Oct 12, 2017 3:38 pm
- Forum: Einstein Equation
- Topic: Einstein
- Replies: 4
- Views: 584
Einstein
When Einstein figured that particles make up electromagnetic radiation, did he name them photons or was that someone else?
- Tue Oct 03, 2017 12:43 pm
- Forum: Balancing Chemical Reactions
- Topic: Order of steps
- Replies: 6
- Views: 1059
Re: Order of steps
My best advice is to write out what elements are involved separately and as I add coefficients to the molecules, I then count how many moles of that element are on each side.
- Tue Oct 03, 2017 12:40 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: Molarity Module Question 24?
- Replies: 3
- Views: 377
Re: Molarity Module Question 24?
I just tried it and I used this method:
M1V1 = M2V2
0.642*V1 = 0.101*1000
V1 = 0.101*1000/0.642
V1 = 157.3ml
M1V1 = M2V2
0.642*V1 = 0.101*1000
V1 = 0.101*1000/0.642
V1 = 157.3ml