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U10 PT - Trevor,Aiden,Quan (1) Chemical rates (define rate law and…
U10 PT - Trevor,Aiden,Quan
1) Chemical rates
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Collision Theory: The particles of reactant must have enough energy and must collide at the correct angles
The greater the rate of effective collisions, the greater the reaction rate is
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The symbol k is the specific rate constant, a numerical value that relates the reaction rate and the concentrations of reactants at a given temperature
define rate law and determine rate laws, orders of the reactions for each reactant, and overall order of the reaction in a chemical equation
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Rate law can be integrated to obtain an integrated rate equation that links concentrations of reactants or products with time directly
What changes rate?
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Concentration: When concentrations are increased, more molecules are available to collide
Surface area: Greater surface area allows particles to collide with many more particles per unit of time
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Reaction order for a reactant defines how the rate is affected by the concentration of that reactant
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2) Equilibrium
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For a given reaction at a given temperature Keq will always be the same regardless of the initial concentrations of reactants and products
Le Chatelier's Principle
If stress is applied to a system at equilibrium, the system shifts in the direction that relieves the stress
Stress is any kind of change in a system that upsets the equilibrium:
- Changing temperature
- Changing pressure, if all species are in the gaseous state
-Changing concentration
-Adding catalyst
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Increasing temperature: Favors the endothermic reaction Decreasing temperature: Favors the exothermic reaction
Increasing the concentration of reactants: Favors the products Decreasing the concentration of reactants: Favors the reactants
Increasing pressure: Favors the side with the less number of moles Decreasing pressure: Favors the side with the greater number of moles
Increasing the concentration of products: Favors the reactants
Decreasing the concentration of products: Favors the products
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peer review suggestions: make sure equilibrium is on the right and chemical rates is on the left since thats how the title sets it up
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suggestion: add background and space out equilibrium section.everything else looks good. you stated what changed equilibrium under Le Chatelier's Principle, maybe explain how it changes it
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