Presentation of rates reaction

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Published on January 10, 2008

Author: Dora

Source: authorstream.com

Rates of Reaction and Collision Theory :  Rates of Reaction and Collision Theory Factors affecting rate : Energy of collisions Frequency of collisions Temperature:  Temperature Reaction : Marble chips with acid Slide4:  Normal High Temperature Lower Temperature Slide5:  Low Temperature Bang! Is it or is it not an effective collision? Maybe? Slide6:  Middle Temperature Bang! Is it or is it not an effective collision? Probably! Slide7:  High Temperature Bang! Is it or is it not an effective collision? Definitely ! Slide8:  Normal High Temperature Lower Temperature Effect of Temperature:  Effect of Temperature Increase in Frequency of collisions AND Increase in energy of collisions Surface Area:  Surface Area Reaction : Marble chips with acid Slide11:  Marble Chips Marble Powder Large Marble Chunks Slide12:  Large Chunks Of Marble Bang! Is it or is it not an effective collision? Only on the outside Slide13:  Marble Chips Around the outside of each chip Bang! Is it or is it not an effective collision? Slide14:  Marble Powder Very fast with every tiny particle Bang! Is it or is it not an effective collision? Slide15:  Marble Chips Marble Powder Large Marble Chunks Effect of Surface Area:  Effect of Surface Area Increase in Frequency of collisions NO! Increase in energy of collisions Concentration:  Concentration Reaction : Marble chips with acid Slide18:  Bench Acid Strong Acid Dilute Acid Slide19:  Concentrated Acid Yes from all angles Bang! Is it or is it not an effective collision? Slide20:  Normal “bench” Acid Yes from most angles Bang! Is it or is it not an effective collision? Slide21:  Dilute Acid Only occasionally so very slow Bang! Is it or is it not an effective collision? HCl Slide22:  Bench Acid Strong Acid Dilute Acid Effect of Concentration:  Effect of Concentration Increase in Frequency of collisions NO! Increase in energy of collisions Catalyst:  Catalyst Reaction : Hydrogen Peroxide and Manganese IV oxide Slide25:  No Catalyst Catalyst Effect of Catalyst:  Effect of Catalyst Effect of Catalyst:  Effect of Catalyst Decrease in NO! Effect on frequency of collisions Activation Energy Slide28:  The End

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