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14 Cards in this Set
- Front
- Back
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What is the reaction rate?
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The change in concentration of a reactant or product per unit time
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What is the formula for the rate of reactions?
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∆[A]/∆t
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Because concentrations of reactants always decrease with time, any expression involving a reactant will be ________
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negative
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What is the form of a rate law?
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Rate=k[compound]^n
k: rate constant n: order |
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What are the two types of Rate Laws?
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Differential Rate Law: expresses how the rate depends on concentration (often called the rate law)
Integrated Rate Law: expresses how concentration depends on time |
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What is the initial rate?
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instantaneous rate determined just after the reaction begins
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What is the integrated Rate law for First Order Rate Laws?
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ln[A]=-kt+ln[A]0
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Explain how the Integrated First Order Rate Law is of the form y=mx+b
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y=ln[a]
x=t m=-k b=ln[A]0 |
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What is the other way the integrated first order rate law can also be expressed as?
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ln([A]0/[A])=kt
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What is the equation for the half-life of a reactant for a first-order reaction?
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t(1/2) = .693/k
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What is the rate law for a second order reaction?
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Rate = k[A]^2
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What is the integrated Rate law for Second Order Rate Law?
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(1/[A])=kt+(1/[A]0)
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What is the rate law for a first order reaction
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Rate = k[A]
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For the reaction given below, what is the instantaneous rate for each of the reactants and products?
3 A + 2 B -> 4 C |
((-1/3)*(∆[A]/∆t)) = ((-1/2)*(∆[A]/∆t)) = ((1/4)*(∆[A]/∆t))
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