The integrated rate laws for zero-, first-, and second-order reaction may be arranged such that they resemble the equation for a straight line,y=mx+b.
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Order
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Integrated Rate Law
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Graph
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Slope
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0
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[A]=-kt+[A]0
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[A] vs. t
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-k
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1
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ln[A]=-kt+ln[A]0
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ln[A] vs. t
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-k
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2
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1[A]= kt+1[A]0
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Part A
The reactant concentration in a zero-order reaction was 0.100 M after 170 s and 3.00×10-2 M after 380 s . What is the rate constant for this reaction?
Part B
What was the initial reactant concentration for the reaction described in Part A?
Part C
The reactant concentration in a first-order reaction was 6.10×10-2 M after 40.0 s and 4.10×10-3 M after 70.0 s . What is the rate constant for this reaction?
Part D
The reactant concentration in a second-order reaction was 0.260 M after 295 s and 7.70×10-2 M after 860 s . What is the rate constant for this reaction?