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13 Dec 2019

Rate of reaction,

Rate law

rate constant


-Symbolized as K.


-A formula that relates reactant concentration to reactionrate


-Always has units of amount per time (e.g., M/s or M/min).


-Can have different units, such as M/s, s-1, or M-1. s-1,depending on the reaction order.


-A formula that relates reactant concentration to reactionrate.




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Collen Von
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17 Dec 2019

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Related questions

What is the difference between the rate law of a reaction and the integrated rate law?

a.The integrated rate law excludes the rate constant.
b.Integrated rate laws always produce a linear relationship between reactant concentration and time.
c.The integrated rate law relates reactant concentration to time.

d.The integrated rate law is independent of reaction order.

Question 2

The half-life (t 1/2) of a chemical reaction is…

a. can only be determined with certainty for a first-order reaction
b.independent of concentration
c. the time required for reactant concentration to fall by one half
d. directly proportional to the rate constant k for the reaction

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. Order Integrated Rate Law Graph Slope 0 [A]=−kt+[A]0 [A] vs. t −k 1 ln[A]=−kt+ln[A]0 ln[A] vs. t −k 2 1[A]= kt+1[A]0 1[A] vs. t k Part A The reactant concentration in a zero-order reaction was 0.100 M after 200 s and 4.00×10−2 M after 310 s . What is the rate constant for this reaction? Express your answer with the appropriate units. Indicate the multiplication of units, as necessary, explicitly either with a multiplication dot or a dash. k0th = SubmitHintsMy AnswersGive UpReview Part Part B What was the initial reactant concentration for the reaction described in Part A? Express your answer with the appropriate units. Indicate the multiplication of units, as necessary, explicitly either with a multiplication dot or a dash. [A]0 = SubmitHintsMy AnswersGive UpReview Part Part C The reactant concentration in a first-order reaction was 6.70×10−2 M after 50.0 s and 3.20×10−3 M after 60.0 s . What is the rate constant for this reaction? Express your answer with the appropriate units. Indicate the multiplication of units, as necessary, explicitly either with a multiplication dot or a dash. k1st = SubmitHintsMy AnswersGive UpReview Part Part D The reactant concentration in a second-order reaction was 0.210 M after 120 s and 6.20×10−2 M after 850 s . What is the rate constant for this reaction? Express your answer with the appropriate units. Indicate the multiplication of units, as necessary, explicitly either with a multiplication dot or a dash.

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.

Order Integrated Rate Law Graph Slope
0 [A]=−kt+[A]0 [A] vs. t −k
1 ln[A]=−kt+ln[A]0 ln[A] vs. t −k
2 1[A]= kt+1[A]0 1[A] vs. t k

Part A The reactant concentration in a zero-order reaction was 0.100 M after 195 s and 1.50×10−2 M after 330 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 6.90×10−2 M after 10.0 s and 8.10×10−3 M after 100 s . What is the rate constant for this reaction?

Part D The reactant concentration in a second-order reaction was 0.130 M after 215 s and 6.10×10−2 M after 845 s . What is the rate constant for this reaction? Please show your work.

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