Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN: 9781938168390
Author: Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher: OpenStax
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 12, Problem 42E
The half-life of a reaction of compound A to give compounds D and E is 8.50 min when the initial concentration of A is 0.150 mol/L. How long will it take for the concentration to drop to 0.0300 mol/L if the reaction is (a) first order with respect to A or (b) second order with respect to A?
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
The half-life of a reaction of compound A to give compounds D and E is 8.50 min when the initial concentration of A is 0.150 mol/L. How long will it take for the concentration to drop to 0.0300 mol/L if the reaction is (a) first order with respect to A or (b) second order with respect to A?
The half-life of a reaction of compound A to give compounds D and E is 7.75 min when the initial concentration of A is 0.165 mol/L.
(a)
How long will it take (in min) for the concentration to drop to 0.0330 mol/L if the reaction is first order with respect to A?
min
(b)
How long will it take (in min) for the concentration to drop to 0.0330 mol/L if the reaction is second order with respect to A?
Benzoyl peroxide (C14H10O4) is widely used in acne treatments. It degrades by 1st-order kinetics and has a half-life of 9.8×103 days at 25 °C.(a) What is the rate constant for this reaction at 25 °C?
(b) How many years will it take for 10% of the benzoyl peroxide to degrade?
Chapter 12 Solutions
Chemistry by OpenStax (2015-05-04)
Ch. 12 - What is the difference between average rate,...Ch. 12 - Ozone decomposes to oxygen according to the...Ch. 12 - In the nuclear industry, chlorine trifluoride is...Ch. 12 - A study of the rate of dimerization of C4H6 gave...Ch. 12 - A study of the rate of the reaction represented as...Ch. 12 - Consider the following reaction in aqueous...Ch. 12 - Describe the effect of each of the following on...Ch. 12 - Explain why an egg cooks move slowly in boiling...Ch. 12 - Go to the PhET Reactions and change to Angled...Ch. 12 - In the PhET Reactions tab to observe how multiple...
Ch. 12 - In the PhET Reactions under Options. (a) Leave...Ch. 12 - How do the rate of a reaction and its rate...Ch. 12 - Doubling the concentration of a reactant increases...Ch. 12 - Tripling the concentration of a reactant increases...Ch. 12 - How much and in what direction will each of the...Ch. 12 - How will each of the following affect the rate of...Ch. 12 - Regular ?ights of supersonic aircraft in the...Ch. 12 - Radioactive phosphorus is used in the study of...Ch. 12 - The rate constant for the radioactive decay of 14C...Ch. 12 - The decomposition of acetaldehyde is a second...Ch. 12 - Alcohol is removed from the bloodstream by a...Ch. 12 - Under certain conditions the decomposition of...Ch. 12 - Nitrosyl chloride, NOCI, decomposes to NO and CI2....Ch. 12 - From the following data, determine the rate...Ch. 12 - Nitrogen monoxide reacts with chlorine according...Ch. 12 - Hydrogen reacts with nitrogen monoxide to form...Ch. 12 - For the reaction AB+C, the following data were...Ch. 12 - For the reaction QW+X, the following data were...Ch. 12 - The rate constant for the ?rst-order decomposition...Ch. 12 - The annual production of HNO3 in 2013 was 60...Ch. 12 - The following data have been determined for the...Ch. 12 - Describe how graphical methods can be used to...Ch. 12 - Use the data provided to graphically determine the...Ch. 12 - Use the data provided in a graphical method to...Ch. 12 - Pure ozone decomposes slowly to oxygen, 2O33O2(g)....Ch. 12 - From the given data, use a graphical method to...Ch. 12 - What is the half-life for the first-order decay of...Ch. 12 - What is the half-life for the first-order decay of...Ch. 12 - What is the half-life for the decomposition of...Ch. 12 - What is the half-life for the decomposition of O3...Ch. 12 - The reaction of compound A to give compounds C and...Ch. 12 - The half-life of a reaction of compound A to give...Ch. 12 - Some bacteria are resistant to the antibiotic...Ch. 12 - Both technetium-99 and thallium-201 are used to...Ch. 12 - There are two molecules with the formula C3H6...Ch. 12 - Fluorine-18 is a radioactive isotope that decays...Ch. 12 - Suppose that the half-life of steroids taken by an...Ch. 12 - Recently, the skeleton of King Richard III was...Ch. 12 - Nitroglycerine is an extremely sensitive...Ch. 12 - For the past 10 years, the unsaturated hydrocarbon...Ch. 12 - Chemical reactions occur when reactants collide....Ch. 12 - When every collision between reactants leads to a...Ch. 12 - What is the activation energy of a reaction, and...Ch. 12 - Account for the relationship between the rate of a...Ch. 12 - Describe how graphical methods can be used to...Ch. 12 - How does an increase in temperature affect rate of...Ch. 12 - The rate of a certain reaction doubles for every...Ch. 12 - In an experiment, a sample of NaClO3 was 90%...Ch. 12 - The rate constant at 325 C for the decomposition...Ch. 12 - The rate constant for the decomposition of...Ch. 12 - An elevated level of the enzyme alkaline...Ch. 12 - In terms of collision theory, to which of the...Ch. 12 - Hydrogen iodide, HI, decomposes in the gas phase...Ch. 12 - The element Co exists in two oxidation states,...Ch. 12 - The hydrolysis of the sugar sucrose to the sugars...Ch. 12 - Use the PhET Reactions Single collision" tab of...Ch. 12 - Use the PhET Reactions Single collision tab of the...Ch. 12 - Why awe elementary reactions involving three or...Ch. 12 - In general, can we predict the effect of doubling...Ch. 12 - Define these terms: (a) unimolecular reaction (b)...Ch. 12 - What is the rate equation for the elementary...Ch. 12 - Given the following reactions and the...Ch. 12 - Write the rate equation for each of the following...Ch. 12 - Nitrogen (Il) oxide, NO, reacts with hydrogen, H2,...Ch. 12 - Experiments were conducted to study the rate of...Ch. 12 - The reaction of CO with CI2 gives phosgene...Ch. 12 - . Account for the increase in reaction rate...Ch. 12 - Compare the functions of homogeneous and...Ch. 12 - Consider this scenario and answer the following...Ch. 12 - For each of the following pairs of reaction...Ch. 12 - For each of the following pairs of reaction...Ch. 12 - For each of the following reaction diagrams,...Ch. 12 - For each of the following reaction diagrams,...Ch. 12 - Based on the diagrams in Exercise 12.83, which of...Ch. 12 - Based on the diagram in Exercise 12.83, which of...
Additional Science Textbook Solutions
Find more solutions based on key concepts
A well-thrown ball is caught in a well-padded mitt. If the deceleration of the ball is 2.10104 m/s2, and 1.85 m...
College Physics
3. What are prefix multipliers? List some examples.
Chemistry: Structure and Properties (2nd Edition)
Draw the following orbitals: a. 3s orbital b. 4s orbital c. 3p orbital
Organic Chemistry (8th Edition)
A catalyst speeds up a chemical reaction by lowering the activation energy. Sketch Diagram A and draw a second ...
General, Organic, and Biological Chemistry (3rd Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- When phenacyl bromide and pyridine are both dissolved in methanol, they react to form phenacylpyridinium bromide. When equal concentrations of reactants were mixed in methanol at 35 C, these data were obtained: (a) Determine the rate law for this reaction. (b) Determine the overall order of this reaction. (c) Determine the rate constant for this reaction. (d) Determine the rate constant for this reaction when the concentration of each reactant is 0.030 mol/L.arrow_forwardComplete the following table for the reaction below. It is first-order in both X and Y. 2X(g)+Y(g)productsarrow_forwardComplete the following table for the reaction 2R(g)+3S(g)productsthat is first-order in R and second-order in S.arrow_forward
- For the reaction of crystal violet with NaOH(aq), the measured rate of reaction is 1.27 106 mol L1 s1 when the concentration of crystal violet cation is 4.13 105 mol/L. (a) Estimate how long it will take for the concentration of crystal violet to drop from 4.30 105 mol/L to 3.96 105 mol/L. (b) Could you use the same method to make an accurate estimate of how long it would take for the concentration of crystal violet to drop from 4.30 105 mol/L to 0.43 105 mol/L? Explain why or why not.arrow_forwardThere are two molecules with the formula C3H6 Propane, CH3CH = CH2, is the monomer of the polymer polypropylene, which is used for indoor-outdoor carpets. Cyclopropane is used as an anesthetic: When heated to 499 C, cyclopropane rearranges (isomerizes) and forms propane with a rate constant of 5.95104s1. What is the half-life of this reaction? What fraction of the cyclopropane remains after 0.75 h at 499 C?arrow_forwardFor the reaction of phenyl acetate with water the concentration as a function of time was given in Question 11. Assume that the concentration of water does not change during the reaction. Analyze the data from Question 11 to determine (a) the rate law. (b) the order of the reaction with respect to phenyl acetate. (c) the rate constant. (d) the rate of reaction when the concentration of phenyl acetate is 0.10 mol/L (assuming that the concentration of water is the same as in the experiments in the table in Question 11).arrow_forward
- The reaction of compound A to give compounds C and D was found to be second-order in A . The rate constant for the reaction was determined to be 2.42 L/mol/s. If the initial concentration is 0.500 mol/L, what is the value of t1/2?arrow_forwardThe decomposition of azomethane, (CH3)2N2, to nitrogen and ethane gases is a first-order reaction, (CH3)2N2(g)N2(g)+C2H6(g). At a certain temperature, a 29-mg sample of azomethane is reduced to 12 mg in 1.4 s. (a) What is the rate constant k for the decomposition at that temperature? (b) What is the half-life of the decomposition? (c) How long will it take to decompose 78% of the azomethane?arrow_forwardAt 573 K, gaseous NO2(g) decomposes, forming NO(g) and O2(g). If a vessel containing NO2(g) has an initial concentration of 1.9 102 mol/L, how long will it take for 75% of the NO2(g) to decompose? The decomposition of NO2(g) is second-order in the reactant and the rate constant for this reaction, at 573 K, is 1.1 L/mol s.arrow_forward
- 1.) The anticancer drug cis-platin hydrolyzes in water with a rate constant of 1.5 ×10−3 min−1 at pH 7.0 and 25°C. Calculate the half-life for the hydrolysis reaction under these conditions. If a freshly prepared solution of cis-platin has a concentration of 0.053 M, what will be the concentration of cis-platin after 5 halflives? after 10 half-lives? 2.) Ethyl chloride decomposes to ethylene and HCl in a first-order reaction that has a rate constant of 1.6 × 10−6 s−1 at 650°C. What is the half-life for the reaction under these conditions? If a flask that originally contains 0.077 Methyl chloride is heated at 650°C, what is the concentration of ethyl chloride after 4 half-lives?arrow_forwardThe rearrangement of cis- to trans-dichloroethylene occurs in the gaseous state in the presence of oxygen according to a first-order time law. At a certain temperature it is observed that, starting from pure cis compounds, 64% trans compounds have formed after 6 hours. What is the half-life of the reaction?arrow_forward(b) A flask contains a mixture of compound X and Y. Compound X follows first order reactions but compound Y decomposes by second order reactions. The half- life for X and Y are 75.11 min and 13.86 min respectively. If the initial concentration of both X and Y are 0.10 M, determine the ratio of the final concentration X to Y after 50 minutes.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Chemistry by OpenStax (2015-05-04)ChemistryISBN:9781938168390Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark BlaserPublisher:OpenStax
Chemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
Chemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
Physical ChemistryChemistryISBN:9781133958437Author:Ball, David W. (david Warren), BAER, TomasPublisher:Wadsworth Cengage Learning,
Chemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning
Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning
Chemistry by OpenStax (2015-05-04)
Chemistry
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:OpenStax
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Physical Chemistry
Chemistry
ISBN:9781133958437
Author:Ball, David W. (david Warren), BAER, Tomas
Publisher:Wadsworth Cengage Learning,
Chemistry: Principles and Practice
Chemistry
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
Kinetics: Chemistry's Demolition Derby - Crash Course Chemistry #32; Author: Crash Course;https://www.youtube.com/watch?v=7qOFtL3VEBc;License: Standard YouTube License, CC-BY