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Chpt%2016-1 - Reaction Rates Begin Chpt 16 16.1 Reaction...

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Reaction Rates Begin Chpt 16
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16.1 Reaction Rates Consider a reaction: H 2 + Cl 2 2 HCl Begin with all the concepts you know: stoichiometry, percent yield Now, consider how fast is HCl produced? This is the rate, what would effect rate?
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Reaction Rates Three factors typically affect reaction rates: Concentration, if the reactants are far apart then collisions are hard to come by Temperature, collisions produce more energy at higher temps, overcome activation energy State of matter, reactants need to be well mixed (gases or solutions)
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Reaction Rate Contrast initial , instantaneous , and average rate for the H 2 in this reaction What are the units for rate? Amount versus Time 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 0 5 10 15 20 25 30 Time (seconds) Moles/Liter H2 HCl
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Reaction Rates By convention: The term “Rate” refers to the initial rate It also refers to a chemical with a coefficient of “1”. In this case: H 2 + Cl 2 2 HCl Rate is the initial rate of H 2 or Cl 2 (the value is the same)
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Chpt%2016-1 - Reaction Rates Begin Chpt 16 16.1 Reaction...

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