The half-life of a reaction, t1/2, is the time it takes for the reactant concentration [A] to decreaseby half. For example, after one half-life the concentration falls from the initial concentration [A]o to[Alo/2, after a second half-life to [Al/4, after a third half-life to [Alo/8. and so on. on.For a first-order reaction, the half-life is constant. It depends only on the rate constant k and not on the reactant concentration. It is expressed ast1/2 = 0.693For a second-order reaction, the half-life depends on the rate constant and the concentration of the reactant and so is expressed ast1/2 =Part AA certain first-order reaction (A-→products) has a rate constant of 5.70x10s at 45 °C. How many minutes does it take for the concentration of the reactant. [A]. to drop to 6.25% of the original concentration?Express your answer with the appropriate units.> View Available Hint(s)8.11 minSubmitPrevious Answersу СorrectPart BA certain second-order reaction (B »products) has a rate constant of 1.00x103 M-s'at 27 °C and an initial half-life of 218 s. What is the concentration of the reactant B after one half-life?Express your answer with the appropriate units.> View Available Hint(s)4.6MSubmitPrevious AnswersX Incorrect; Try Again; 8 attempts remaining

For second order kinetics, Half life(t1/2) = 1/k[Ao] [Ao] = 1/k.t1/2 = 1/1.0×10-3× 218 =…

:A tain first-order reaction (A-sproducts) has a rate constant of 5.70x10s' at 45 °C. How many minutes does it take for the concentra ess your answer with the appropriate units. ew Available Hint(s) 1 min Previous Answers - Соrrect :B tain second-order reaction (B products) has a rate constant of 1.00x10~ª M ' -s 'at 27 °C and an initial half-ife of 218 s. What is ess your answer with the appropriate units. ew Available Hint(s) HA .6 M abmit Previous Answers

:A tain first-order reaction (A-sproducts) has a rate constant of 5.70x10s' at 45 °C. How many minutes does it take for the concentra ess your answer with the appropriate units. ew Available Hint(s) 1 min Previous Answers - Соrrect :B tain second-order reaction (B products) has a rate constant of 1.00x10~ª M ' -s 'at 27 °C and an initial half-ife of 218 s. What is ess your answer with the appropriate units. ew Available Hint(s) HA .6 M abmit Previous Answers

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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A second-order reaction has a rate constant of 0.008000/(Ms) at 30°C. At 40°C, the rate constant is 0.02800/(M. s). (A) What is the activation energy for this reaction? kJ/mol /(M.s) (B) What is the frequency factor, A? [ (C) Predict the value of the rate constant at 41°C. /(M.s)
9:49 PM Mon Feb 13. Question 4 of 14 The reaction A + B 2 C has the rate law rate = K[A] [B]³. By what factor does the rate of reaction increase when [A] remains constant but [B] is doubled? Tap here or pull up for additional resources +
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