Rates of Reaction

Aug 02, 2012

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Monday 2/25/08. Prep: Get 30 copies of each lab handout

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Rates of Reaction

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RATES OF REACTION

951 views • 79 slides

RATES OF REACTION

RATES OF REACTION. Rates of Reaction. The rate of a chemical reaction is the speed at which the reaction occurs (i.e. speed at which the reactants are used or products are produced). Rate can be measured by the: 1) change in mass of reactants or products . 2) change in pH

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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

Rates of Reaction. Rates of electrophilic aromatic substitutions reactions increase with electron donating groups (EDG) on the ring. Rates decrease when electron density is removed from the ring:. E +. Where will the electrophile go?. These rings therefore will react faster. x.

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Rates of Reaction

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. Objectives To understand that a chemical reaction involves collisions between particles To be able to describe the factors which will affect the rate of a chemical reaction. Some Everyday Chemical Reactions. Burning wood Fruit ripening Getting a tan Cooking food .

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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

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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Rates of Reaction

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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Rates of Reaction

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

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Rates of Reaction

Rates of Reaction. Chapter16. C. CONCENTRATION. A. B. TIME. RATE CHANGE DURING A REACTION. Reactions are fastest at the start and get slower as the reactants concentration drops. In a reaction such as A + 2B ——> C the concentrations might change as shown. Reactants ( A and B )

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Rates of Reaction

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

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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Rates of Reaction

Rates of Reaction. Prentice-Hall Chapter 18.1. Objectives. Describe how to express the rate of a chemical reaction. Identify four factors that influence the rate of a chemical reaction.

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RATES OF REACTION

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RATES OF REACTION

RATES OF REACTION. Students should be able to: Describe the effect of concentration changes on the rate of a reaction. Explain why an increase in the pressure of a gas increases the rate of the reaction.

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Rates of Reaction

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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