Boltzmann s Concepts of Reaction Rates

Jun 02, 2012

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Boltzmann s Concepts of Reaction Rates

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1. 6/2/2012

7. Molecular Temperature

8. The Kinetic Molecular Model for Gases ( Postulates ) Gas consists of large number of small individual particles with negligible size Particles in constant random motion and collisions No forces exerted among each other Kinetic energy directly proportional to temperature in Kelvin

RATES OF REACTION

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RATES OF REACTION

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Rates of Reaction

Rates of Reaction. 8H + + C 2 O 4 2- + MnO 4 -  Mn 2+ + 4H 2 O + CO 2 H 2 SO 4 , H 2 C 2 O 4 (oxalic), KMnO 4 provide ions. Read 18.1 pg. 737-738 Demonstration of variations in reaction rates: Ca vs. Na vs. Li in water to produce H 2 gas Flour burning in air.

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RATES OF REACTION

Rate of Reaction: speed at which a chemical reaction occurs  usually expressed as the change in concentration per unit of time. Product being formed or reactant being consumed. Measurements can include mass, colour, conductivity, volume, and pressure. . RATES OF REACTION. (CHAPTER 6).

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Rates of Reaction . Mrs. Coyle. How fast does aging occur?. http://www.ging-strategie.de/Anti%20Aging%20Strategie.JPG. How fast does the candle burn?. http://images.usatoday.com/tech/_photos/2006/03/28/aprilfig1.jpg. Reaction Rate. The speed with which products form from the reactants.

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Rates of Reaction

Rates of Reaction. Rates of Reaction. Reactions occur because there are successful collisions between reactant particles, i.e. they collide in the correct direction and with enough energy. If they do not have enough energy, they are dud collisions .

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Rates of Reaction

Rates of Reaction. R P. rate =. D [R]. D [P]. rate = -. D t. D t. Chemical Kinetics. Thermodynamics – does a reaction take place? Kinetics – how does a reaction proceed ( reaction mechanism ) and how fast ( reaction rate ).

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Rates of reaction. Elephant toothpaste. We are going to look at a reaction named after elephant toothpaste and you’ll see why In graduated cylinder # 1 – 20 mL 8% H 2 O 2 , 1 mL of detergent and a 0.5g of KI In graduated cylinder #2 - 20 mL 30 % H 2 O 2 , 1 mL of detergent and a tip of of KI.

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RATES OF REACTION

RATES OF REACTION. (CHAPTER 6). Rate of Reaction: speed at which a chemical reaction occurs  usually expressed as the change in concentration per unit of time. Product being formed or reactant being consumed. Measurements can include mass, colour, conductivity, volume, and pressure.

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Boltzmann’s Concepts of Reaction Rates

Boltzmann’s Concepts of Reaction Rates. Distribution of Air Particles. Number. Height. Mathcad & EXCEL. P.S. 5. Distribution of Molecular Energy Levels. Where: E = E i – E j & e -E/kT = Boltzman Factor. (S14) The Barometric Formulation. (S14) The Barometric Formulation.

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Rates of Reaction. Ali Artani Josh Li-Taylor Lageishon Mohanadas Zachery Oman. Introduction. A chemical reaction is the combination of reactants to form a product Its rate is the speed at which the product forms There are four main factors that increase the speed of a chemical reaction:

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2. Rates of Reaction. 5. 1. 2. 3. 4. 6. 10. 7. 8. 9. 11. 12. 13. 14. 15. 16. 17. 1. Describe how the concentration of reactants affects the speed of reaction?. As the reactant concentration increases the speed of the reaction increases.

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Rates of Reaction

Rates of Reaction. Chapter 6. Chemical Kinetics. Info Given : (deals only with very beginning and very end) Balanced equation tells us nature, state, and relative amounts of reactants and products.

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Rates of Reaction....!

Rates of Reaction....!. 02. What is meant by the term rates of reaction? What does rate refer too... What does reaction refer too So putting it together rates of reaction simply means how fast a reaction occurs. RATES OF REACTION.

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Rates of Reaction

Rates of Reaction. A chemical reaction occurs when: Collisions between molecules have sufficient energy to break the bonds in the reactants. Molecules collide with the proper orientation. Bonds between atoms of the reactants are broken, and new bonds form. Rates of Reaction.

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Rates of Reaction. To revise the 4 factors that affect rates To revise methods of measuring rates.

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Rates of Reaction. Unit 8. Reaction Times. Time of reaction varies Examples: HCl + NaOH  NaCl + H 2 O Instantaneous 2 CO + O 2  2CO 2 Thousands of Years It is therefore important to not only know if a reaction will occur, but also what the reaction rate is.

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Rates of Reaction. 18.1. The heat given off by the corrosion reaction of an iron-magnesium alloy with salt water can produce a hot meal. The rate of reaction is increased by adding salt water, so heat is produced rapidly. You will learn some ways in which the rate of a reaction can be increased.

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N4. Rates of Reaction. 5. 1. 2. 3. 4. 6. 10. 7. 8. 9. 11. 12. 13. 14. 15. 18. 19. 16. 17. 1. Describe how the concentration of reactants affects the speed of reaction?. As the reactant concentration increases the speed of the reaction increases.

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