Search results “Determining rate law graphical method for howe”

You need to learn the 6 graphs and be able to explain how they link together.

Views: 35980
Richard Thornley

Using Excel - Graphical Method

Views: 4563
Yu Kay Law

This chemistry video tutorial focuses on the Arrhenius equation and how to derive it's many different forms within the subject of chemical kinetics.
Here is a list of topics:
1. Arrhenius Equation and the Rate Constant K
2. The units of R and the activation energy
3. Rate law expression and the concentration of reactant A
4. Frequency Factor, Collision Frequency and Steric Factor
5. Rate of Reaction, Rate Constant K, and Activation Energy
6. The Effect of a Catalyst on Activation Energy and Reaction Rate
7. Slope, Ea, and R
8. Slope Intercept Form Linear Arrhenius Equation
9. Factors Affecting the rate of the reaction - concentration, temperature, catalyst, activation energy and rate constant K
10. Arrhenius Equation / Formula Graph

Views: 78945
The Organic Chemistry Tutor

Sample concentration vs. time data is analyzed to determine the reaction order, rate law and rate constant.

Views: 20825
Eric Zuckerman

A snappy video looking into those rate graphs including concentration-time and rate-concentration graphs. It will then look at how you can work out order from them. Judge for yourself - ORDER, ORDER!

Views: 27746
Allery Chemistry

Dr. Shields further discusses the differential rate law and the initial instantaneous rate. How to determine the rate law for a reaction using the method of initial rates is discusses with an example. General Chemistry

Views: 5606
Shawn Shields

This video explains method of determination of first order reaction rate constant by graphical method.

Views: 820
Professor Tushar

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Views: 532982
Brightstorm

Differential Method will help us to determine the Rate of Reaction Order and Rate contsant "k"
It is also important to mark that we will be working with DIFFERENTIALS, therefore we will be using the next methods to calculate such differentials:
- Graphical Method
- Numerical Method
- Polynomial Fit
Remember that these methods ARE used to THIS method!
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Views: 6804
Chemical Engineering Guy

Uses the McCabe-Thiele graphical method to determine the number of equilibrium stages in a distillation column. Part 1 of 2. Made by faculty at the University of Colorado Boulder, Department of Chemical & Biological Engineering. Check out our separations/mass transfer playlist: http://www.youtube.com/playlist?list=PL61BFC1C064B40049

Views: 134122
LearnChemE

Given two rate constants at two temperatures, you can calculate the activation energy of the reaction.
In the first 4m30s, I use the slope formula (y2-y1 / x2-x1)
In the last half, I use the Arrhenius equation to solve for Ea directly.

Views: 32324
chemistNATE

How do you find the rate constant of a reaction, if all you're given is a table of kinetic data (concentrations and times)

Views: 271501
chemistNATE

More free chemistry help videos: http://www.chemistnate.com
How to find the reaction order if you're given a table of kinetic data. Trick: Create two new columns, ln[A] (1st order) and 1/[A] (2nd order), then calculate first differences. Whichever set of first differences is approximately constant .... that corresponds to the order of your reaction.

Views: 140937
chemistNATE

This general chemistry study guide video lecture tutorial provides an overview of chemical kinetics. It contains plenty of examples, practice problems, and conceptual questions to help you to master the course. This video is especially helpful to those taking AP chemistry in high school or general chemistry in college.
Here is a list of topics:
1. How to calculate the rate of the reaction using the change in concentration and time
2. Determining the order of a reactant and the overall order of the reaction using the method of initial rates.
3. How to determine the rate equation or rate law expression
4. Calculating the rate constant K and the units of K
5. Understanding the difference between the first order, second order, and zero order reaction.
6. Equations and formulas for zero order, first, and second order reactions
7. Half Life Formula, Initial Concentration of A and Rate constant K
8. Factors affecting reaction rate – concentration, temperature, and catalyst
9. Relationship between the rate of the reaction and the concentration
10. Rate constant K, temperature, catalyst, activation energy and potential energy diagrams
11. Forward activation energy vs reverse activation energy
12. Arrhenius Equation
13. Half Life Problems and Half Life Method
14. Collision frequency, steric factor, and frequency factor
15. Reaction Mechanism – Slow Step – Rate Determining Step
16. How To Find the Intermediate and Catalyst in a Reaction Mechanism

Views: 156437
The Organic Chemistry Tutor

Nasty graph, natural logs, yuk. See if this helps you to calculate Ea from rate constant and temperature data. Only temperature and a catalyst will change the rate constant. Arrhenius worked out how.

Views: 61524
Richard Thornley

Learn how to find the rate of change from graph. The rate of change is the rate at which y-values are changing with respect to the change in x-values. To determine the rate of change from a graph, a right triangle is drawn on the graph such that the line of the graph is the hypothenuse of the right triangle. Then the rate of change of the graph is given by the length of the vertical leg of the right triangle divided by the length of the horizontal leg of the right triangle.
#linearequations #sloperateofchange

Views: 70014
Brian McLogan

Visit http://ilectureonline.com for more math and science lectures!
In this video I will explain how reaction order are determined.

Views: 4009
Michel van Biezen

How the order of a chemical reaction is determined. Also, a few examples on determining the order of a reaction with one reactant decomposing into products.

Views: 284732
Ben's Chem Videos

Here we create 3 different plots to evaluate if the reaction is zero order, first order, or second order.

Views: 25517
profpiersol

036 - The Rate Law
Paul Andersen explains how the rate law can be used to determined the speed of a reaction over time. Zeroth-order, first-order and second-order reactions are described as well as the overall rate law of a reaction. The rate of a reaction can be determined experimentally.
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Title: String Theory
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"File:Ammonia-3D-vdW.png." Wikipedia, the Free Encyclopedia. Accessed October 19, 2013. http://en.wikipedia.org/wiki/File:Ammonia-3D-vdW.png.
File:Crystal Violet in Aqueous Solution.jpg, n.d. http://en.wikipedia.org/wiki/File:Crystal_Violet_in_aqueous_solution.jpg.
"File:Nitric-oxide-3D-vdW.png." Wikipedia, the Free Encyclopedia. Accessed October 19, 2013. http://en.wikipedia.org/wiki/File:Nitric-oxide-3D-vdW.png.
"File:Nitrogen Dioxide at Different Temperatures.jpg." Wikipedia, the Free Encyclopedia. Accessed October 19, 2013. http://en.wikipedia.org/wiki/File:Nitrogen_dioxide_at_different_temperatures.jpg.
"File:Nitrogen-dioxide-3D-vdW.png." Wikipedia, the Free Encyclopedia. Accessed October 19, 2013. http://en.wikipedia.org/wiki/File:Nitrogen-dioxide-3D-vdW.png.
"File:Oxygen Molecule.png." Wikipedia, the Free Encyclopedia. Accessed October 19, 2013. http://en.wikipedia.org/wiki/File:Oxygen_molecule.png.
File:Spektrofotometri.jpg, n.d. http://en.wikipedia.org/wiki/File:Spektrofotometri.jpg.
Izmaelt. Slovenčina: Príprava Oxidu Dusičitého z Medi a Kyseliny Dusičnej. Fotené Na Slovenskej Technickej Univerzite., October 27, 2010. Own work. http://commons.wikimedia.org/wiki/File:Nitrogen_dioxide.jpg.

Views: 221156
Bozeman Science

Integral Method, contrary to Differential MEthod, uses Integrals.
We propose one of three reaction orders:
-Zero
-First
-Second
Then we graph the corresponding relationship. If the data falls in a straight line, we have a good fit. If it does not, then it is not accepted!
Go to webpage for more information and more videos!
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Views: 5440
Chemical Engineering Guy

8-11. This video shows how to use the differential or van't Hoff method to determine the reaction rate law for reactions with only one reagent. It also discusses the concept of the initial rate.

Views: 556
Diego Troya

A plot of ln [A] vs t will yield a straight line with slope -k. The y-intercept will give the ln of initial concentration. [A] is the concentration of substrate used in the first order reaction.

Views: 3848
Massimo Bozzi

Edited by Dan Rosenthal. Everything else by me.

Views: 85173
GenChem Concepts

8-10. This video shows how to determine the reaction rate law using the integrated rate laws and the half lives of chemical reactions with one reagent that are either 0th, 1st, or 2nd-order.

Views: 652
Diego Troya

A first order reaction has integrated rate law
[A] = [A]0 e^(-kt)
which is the same as ln [A] = -kt + ln [A]0
Which means a graph of ln [A] vs time will give a line with slope -k and a y-intercept of ln [A]0.
Check me out: http://www.chemistnate.com

Views: 117790
chemistNATE

This video-tutorial shows how to determine the order of a reaction by the initial rates method. The most common method for directly determining the order of a reaction - the form of the rate law - is the method of initial rates. https://youtu.be/7Y8fc0SS-ws
Several experiments are carried out using different initial concentrations and the initial rate is determined for each run. The results are then compared to see how the initial rate depends on the initial concetrations.
The initial rates method shows the effect of varying reactant concentrations on the initial rate of reaction. Using this data we can determine the order with respect to each reactant, and hence the rate equation.
Relevant Videos
https://www.youtube.com/playlist?list=PLGEE3kLOMCp6HN1QQ3o30D-RBryS0ZhkK
https://youtu.be/8UkP7BqXcjs
https://youtu.be/Zz1vTp54K3s
https://youtu.be/dMQmUs4iGYA
https://youtu.be/a-14BVC4Gi4
For more info please see:
http://chem-net.blogspot.com/
Subsribe to Chemistry_Net: http://www.youtube.com/channel/UCRHkadk8a3zbg7RsKYwcuHw?view_as=public

Views: 643
Chemistry_Net

Learn how to determine the order of the reaction from graphs. Also learn how to calculate the half-life for zero, first, and second order reactions.

Views: 623
DHS Science

This video explains determination of zero order rate constant by graphical method. Zero order rate constant is determined from the slop from the graph of concentration vs time. It is the negative value of slop.

Views: 211
Professor Tushar

Rate of reaction is defined as the change in the amount of reactants or products per unit time.
In a graph of quantity of product/reactant over time, the rate of reaction is equal to the gradient of the graph.
This video is created by http://www.onlinetuition.com.my/
More videos and free notes are available at http://spmchemistry.onlinetuition.com.my/

Views: 27480
myhometuition

This chemical kinetics video tutorial focuses on solving activation energy problems using the Arrhenius Equation. It explains how to calculate the activation energy, the rate constant K, and the temperature given the rate constant and activation energy. In addition, it contains example problems of calculating the rate constant k by using the frequency factor, steric factor, and the collision frequency. This chemistry video also has practice problems showing you how to calculate the activation energy from the slope of the line of a ln(k) vs 1/T graph and how to calculate the frequency factor from the y-intercept of such a graph. This tutorial contains plenty of examples and practice problems.
New Chemistry Video Playlist:
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Views: 11824
The Organic Chemistry Tutor

At the end of this activity, students should be able to:
– explain what zero–order, first–order and second–order reactions are
– explain how to express the rate equation for a first–order reaction using natural logarithms
– explain how the half–life is related to the rate constant for first–order reactions
– use graphical methods in kinetics.

Views: 127
Chemistry Channel

This video explains method of determination of zero order rate constant without using graphs. This method uses equation for determination of rate constant for zero order process.

Views: 374
Professor Tushar

Here I look at 3 examples of how the rate equation can be obtained from experimental runs. The order of the reaction for each of the reactants is determined, allowing the rate equation to be constructed. In the third example I rearrange the rate equation to make the rate constant (k) the subject of the equation. I then work out its value and units. In the next video "Kinetics 2" I look at 3 further examples, which are a little more difficult.

Views: 521
FranklyChemistry

An example of how to calculate linear regression line using least squares. A step by step tutorial showing how to develop a linear regression equation. Use of colors and animations.
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David Longstreet Professor of the Universe
Professor of the Universe: David Longstreet http://www.linkedin.com/in/davidlongstreet/
MyBookSucks.Com

Views: 619102
statisticsfun

This video outlines the methods for determining the energy of activation using Arrhenius Equation.
Two methods are discussed
The graphical method
Solution by equation
A sample problem to determine the energy of activation is also included.
It is assumed that the person viewing this video has some understanding of the concepts of
1. Rate law
2. Factors affecting rates of reaction
3. Equation for a straight line y=mx + b
4. Ability to determine the slope of a line
5. Properties of natural logs ln and logs to the base 10
For more on rates of reaction and energy of activation you may visit the following website
http://www.vinstan.com
http://www.vinstan.com/sch4u/rates
http://www.vinstan.com/arrhenius-equation-and-ea
The video is ideal for
AP Chemistry
IB Chemistry,
IGCSE,
CBSE,
TOPS,
A-Levels

Views: 17837
Vinstan

Determine the rate law for a reaction occurring in a batch reactor using differential analysis. Made by faculty at the University of Colorado Boulder, Department of Chemical and Biological Engineering.
Check out our Kinetics/Reactor Design playlists: https://www.youtube.com/user/LearnChemE/playlists?view=50&flow=list&shelf_id=7
Are you using a textbook? Check out our website for videos organized by textbook chapters: http://www.learncheme.com/screencasts/kinetics-reactor-design

Views: 9079
LearnChemE

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You're a #baller
This gives the basic outline of the dreaded y=mx+b formula, for linear equations. How to solve for b (y-intercept), and how to solve for any other part. My goodness, this is getting intense

Views: 1615061
Tyler Tarver

Overview of how to use graphical methods to establish reaction orders, and some insights into the rate determining step for multi-step reaction mechanisms.

Views: 34
Jason's Chem Clips

You need to know the 3 parts of the graph:
a) initially linear since many free enzymes available at the lower concentration of substrate.
b) rate begins to slow as substrate cannot always find a free enzyme (some are being used by other substrate)
c) Saturated -- the enzymes are always in use -- increasing substrate will no longer increase rate.
Adding inhibitors will change these graphs -- but this is for another assessment statement.

Views: 96375
Richard Thornley

Vary the concentrations of reactants and measure the time it takes for product to appear.
This video is part of the Flinn Scientific Best Practices for Teaching Chemistry Video Series, a collection of over 125 hours of free professional development training for chemistry teachers - http://elearning.flinnsci.com
ATTENTION: This demonstration is intended for and should only be performed by certified science instructors in a safe laboratory/classroom setting.
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Views: 181292
FlinnScientific

This video outlines the procedures for calculating the activation energy of a reaction using Excel. By determining the slope of the best fit line for natural log (ln) of the rate constant (k) versus reciprocal temperature (1/T), the activation energy can be determined. This will work for any problem where temperature and rate constant data have been collected.

Views: 38011
wolfram184

The activation energy of a reaction is determined by graphical means using experimental data.

Views: 12272
Eric Zuckerman

065 - The Equilibrium Constant
In this video Paul Andersen defines the equilibrium constant (K) and explains how it can be calculated in various reversible reactions. The equilibrium constant is a ratio of the concentration of the products to the concentration of the reactants. If the K value is less than one the reaction will move to the left and if the K value is greater than one the reaction will move to the right.
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Title: String Theory
Artist: Herman Jolly
http://sunsetvalley.bandcamp.com/track/string-theory
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"Reversible Reactions." PhET. Accessed January 2, 2014. http://phet.colorado.edu/en/simulation/reversible-reactions.
"Reversible Reactions." PhET. Accessed January 2, 2014. http://phet.colorado.edu/en/simulation/reversible-reactions.

Views: 336123
Bozeman Science

Learn More at mathantics.com
Visit http://www.mathantics.com for more Free math videos and additional subscription based content!

Views: 665076
mathantics

If you have rate constants at different temperatures, you can use Microsoft Excel (or OpenOffice) to find the Activation Energy.
The slope of a (ln k) vs (1/T) graph is -Ea/R. So just take the slope, flip the sign, and multiply by 8.314 ... the answer will be in J/mol
Check me out: http://www.chemistnate.com

Views: 12329
chemistNATE

Views: 33784
Russ Cornelius

Learn how to find the rate of change from graph. The rate of change is the rate at which y-values are changing with respect to the change in x-values. To determine the rate of change from a graph, a right triangle is drawn on the graph such that the line of the graph is the hypothenuse of the right triangle. Then the rate of change of the graph is given by the length of the vertical leg of the right triangle divided by the length of the horizontal leg of the right triangle.
#linearequations #sloperateofchange

Views: 6523
Brian McLogan

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