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Identifying Reaction Order Solutions Library

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Identifying Reaction Order

Q. Consider this reaction and its rate law.2A+ 2B → products rate = k[B] What is the order with respect to A? What is the order with respect to B? Wha...

Solved • Aug 2, 2019

Identifying Reaction Order

Q. The reaction between carbon disulfide and ozone described by the equation CS2(g) + 2O3(g) → CO2(g) + 2SO2(g) was studied using a large excess of CS...

Solved • Jul 9, 2019

Identifying Reaction Order

Q. You are experimenting with a radioactive sample of polonium. At the end of 14.0 minutes, exactly 1/16 of the polonium remains. What is the correspo...

Solved • Jul 9, 2019

Identifying Reaction Order

Q. Does the rate constant have the same units as the rate?

Solved • Dec 6, 2018

Identifying Reaction Order

Q. Comparison of first-order and zero-order reactions for the disappearance of reactant A with time.At which times during the reaction would you have ...

Solved • Dec 6, 2018

Identifying Reaction Order

Q. Consider the data presented below. Time  (s) 04080120160Moles of A0.1000.0670.0450.0300.020Determine whether the reaction is first order or second ...

Solved • Dec 6, 2018

Identifying Reaction Order

Q. Consider the equation for the decomposition of SO2Cl2: SO2Cl2(g) → SO2(g) + Cl2(g)The graph of ln[SO2Cl2] versus time isUse the graph and the best ...

Solved • Dec 6, 2018

Identifying Reaction Order

Q. The decomposition of Br2 is followed as a function of time; two different plots of the data are shown here. Determine the order and rate constant f...

Solved • Dec 6, 2018

Identifying Reaction Order

Q. A decomposition reaction, with a rate that is observed to slow down as the reaction proceeds, is found to have a half-life that depends on the init...

Solved • Dec 6, 2018

Identifying Reaction Order

Q. The data below were collected for the following reaction at a certain temperature: X2Y → 2X + Y Time (h)  [X2Y] (M) 0.00.1001.00.08562.00.07483.00....

Solved • Dec 6, 2018

Identifying Reaction Order

Q. At 700 K acetaldehyde decomposes in the gas phase to methane and carbon monoxide. The reaction is: CH3CHO(g) → CH4(g) + CO(g). A sample of CH3CHO i...

Solved • Dec 6, 2018

Identifying Reaction Order

Q. Indicate the order of reaction for each of the following observations.A plot of the concentration of the reactant versus time yields a straight line.

Solved • Dec 6, 2018

Identifying Reaction Order

Q. A certain reaction has the following general form: aA → bB At a particular temperature and [A]0 = 2.00 x 10-2 M, concentration versus time data wer...

Solved • Nov 7, 2018

Identifying Reaction Order

Q. For the reaction A → products, successive half-lives are observed to be 10.0, 20.0, and 40.0 min for an experiment in which [A]0 = 0.10 M. Calculat...

Solved • Nov 5, 2018

Identifying Reaction Order

Q. The rate law for the reaction 2NOBr (g) → 2NO (g) + Br2 (g)at some temperature isa. If the half-life for this reaction is 2.00 s when [NOBr] 0 = 0....

Solved • Nov 5, 2018

Identifying Reaction Order

Q. The rate law for the decomposition of phosphine (PH 3) isIt takes 120. s for 1.00 M PH 3 to decrease to 0.250 M. How much time is required for 2.00...

Solved • Nov 5, 2018

Identifying Reaction Order

Q. The dimerization of butadiene2C4H6 (g) → C8H12 (g)was studied at 500. K, and the following data were obtained:Assuming thatRate = - Δ [C4H6] / Δtde...

Solved • Nov 5, 2018

Identifying Reaction Order

Q. Another radioisotope of iodine, 131I, is also used to study thyroid function (see Follow-up Problem 16.7A). A patient is given a sample that is 1.7...

Solved • Nov 1, 2018

Identifying Reaction Order

Q. For the decomposition of gaseous dinitrogen pentoxide,2N2O5(g) ⟶ 4NO2(g) + O2(g)the rate constant is k = 2.8 x 10-3 s-1 at 60°C. The initial concen...

Solved • Nov 1, 2018

Identifying Reaction Order

Q. For the decomposition of gaseous dinitrogen pentoxide,2N2O5(g) ⟶ 4NO2(g) + O2(g)the rate constant is k = 2.8 x 10-3 s-1 at 60°C. The initial concen...

Solved • Nov 1, 2018

Identifying Reaction Order

Q. The acid-catalyzed hydrolysis of sucrose occurs by the following overall reaction, whose kinetic data are given below:C12H22O11(s) + H2O(l) ⟶C6H12O...

Solved • Nov 1, 2018

Identifying Reaction Order

Q. The acid-catalyzed hydrolysis of sucrose occurs by the following overall reaction, whose kinetic data are given below:C12H22O11(s) + H2O(l) ⟶C6H12O...

Solved • Nov 1, 2018

Identifying Reaction Order

Q. A decomposition reaction has a rate constant of 0.0012 yr-1. (b) How long does it take for [reactant] to reach 12.5% of its original value?

Solved • Nov 1, 2018

Identifying Reaction Order

Q. Recently, the skeleton of King Richard III was found under a parking lot in England. If tissue samples from the skeleton contain about 93.79% of th...

Solved • Oct 31, 2018

Identifying Reaction Order

Q. Fluorine-18 is a radioactive isotope that decays by positron emission to form oxygen-18 with a half-life of 109.7 min. (A positron is a particle wi...

Solved • Oct 31, 2018

Identifying Reaction Order

Q. Fluorine-18 is a radioactive isotope that decays by positron emission to form oxygen-18 with a half-life of 109.7 min. (A positron is a particle wi...

Solved • Oct 31, 2018

Identifying Reaction Order

Q. There are two molecules with the formula C3H6. Propene, CH3CH=CH2 , is the monomer of the polymer polypropylene, which is used for indoor-outdoor c...

Solved • Oct 31, 2018

Identifying Reaction Order

Q. Pure ozone decomposes slowly to oxygen, 2O3 (g) ⟶ 3O2 (g). Use the data provided in a graphical method and determine the order and rate constant of...

Solved • Oct 31, 2018

Identifying Reaction Order

Q. Use the data provided to graphically determine the order and rate constant of the following reaction: SO2Cl2 ⟶ SO2 + Cl2

Solved • Oct 31, 2018

Identifying Reaction Order

Q. A certain reaction has the following general form: aA → bB At a particular temperature and [A]0 = 2.00 x 10-2 M, concentration versus time data wer...

Solved • Oct 30, 2018

Identifying Reaction Order

Q. The decomposition of hydrogen peroxide was studied, and the following data were obtained at a particular temperature:Assuming thatRate = - Δ [H2O2]...

Solved • Oct 30, 2018

Identifying Reaction Order

Q. The rate law for the rearrangement of CH3NC to CH3CN at 800 K is Rate = (1300 s-1) [CH3NC]. What is the half-life for this reaction? a. 1.9 x 10-3 ...

Solved • Aug 1, 2018

Identifying Reaction Order

Q. Barium-122 has a half-life of 2 minutes. You just obtained a sample weighing 10.0 grams. If takes 10 minutes to set up the experiment in which bari...

Solved • Jul 30, 2018

Identifying Reaction Order

Q. 32P is a radioactive isotope with a half-life of 14.3 days. If you currently have 45.9 g of 32P, how much 32P (grams) was present 2.00 days ago?

Solved • Jun 19, 2018

Identifying Reaction Order

Q. A fossil is found to have a 14C level of 77.0% compared to living organisms. How old is the fossil in years?

Solved • May 31, 2018

Identifying Reaction Order

Q. The reaction was monitored a function of time:A → B + CA plot of ln[A] versus time yields a straight line with slope -0.0045/s.a. What is the value...

Solved • Mar 15, 2018

Identifying Reaction Order

Q. The following reaction was monitored as a function of time:AB → A + BA plot of 1/[AB] versus time yields a straight line with slope 5.5 × 10 −2 (M⋅...

Solved • Mar 13, 2018

Identifying Reaction Order

Q. Identify the order with respect to the reactant, A.  (A → product) i) The half-life of A increases as the initial concentration of A decreases. ...

Solved • Feb 12, 2018

Identifying Reaction Order

Q. For the reaction:X → Y Identify what the graphs of [X] versus time and [Y] versus time would look like for various orders.A) Zero-order [X] vs. tB)...

Solved • Dec 22, 2017

Identifying Reaction Order

Q. For A → products, time and concentration data were collected and plotted as shown below.Determine the reaction order, the rate constant, and the un...

Solved • Dec 22, 2017

Identifying Reaction Order

Q. For each of the following cases, identify the order with respect to the reactant, A. Case (A → products) Orderi) The half-life of A is independent ...

Solved • Sep 26, 2017

Identifying Reaction Order

Q. For the reactionX → YIdentify what graphs of [X] versus time and [Y] versus time would look like for various orders. 

Solved • Sep 24, 2017

Identifying Reaction Order

Q. For each of the following cases, identify the order with respect to the reactant, A.  i) The half-life of A is independent of the initial concentr...

Solved • Sep 22, 2017

Identifying Reaction Order

Q. A reaction was experimentally determined to follow the rate law, Rate = k[A]  2 where k = 0.319 s-1M-1. Starting with [A] o = 0.500 M, how many sec...

Solved • Jun 26, 2017

Identifying Reaction Order

Q. For the reaction whose rate law is rate = k[X] 2, a plot of which of the following is a straight line?A. [X] versus timeB. ln [X] versus timeC. 1/[...

Solved • Jun 26, 2017

Identifying Reaction Order

Q. The half-life for an isotope is 100 years. If 10% of the original amount of the isotope was present, how much time has passed?

Solved • Jun 8, 2017

Identifying Reaction Order

Q. For the reaction:   cyclopropane →  propene a plot of In[cyclopropane] vs. time in seconds give a straight line with slope -4.1 x 10 -3 s-1 at 550...

Solved • May 4, 2017

Identifying Reaction Order

Q. A compound decomposes with a half-life of 8.0s and the half-life is independent of the concentration. How long does it take for the concentration t...

Solved • May 4, 2017

Identifying Reaction Order

Q. For the reaction Cyclopropane (g) → propene(g) at 500°C, a plot of ln [cyclopropane] vs. t gives a straight line with a slope of -0.00067 s-1. Wha...

Solved • Apr 28, 2017

Identifying Reaction Order

Q. Assuming a half-life of 1599 years, how many years will be needed for the decay of 15/16 of a given amount of radium-226? 1. 800 years 2. 4797 ye...

Solved • Jan 27, 2017

Identifying Reaction Order

Q. Consider the reaction 2 N2O (g) → 2 N2 (g) + O2 (g)    rate = k [N2O]  Calculate the time required for the concentration of N2O (g) to decrease f...

Solved • Jan 27, 2017

Identifying Reaction Order

Q. Consider the dimerization reaction 2 A → A2                     rate = k [A]2 When the initial concentration of A is 2.0 M, it requires 30 min fo...

Solved • Jan 27, 2017

Identifying Reaction Order

Q. The rate constant for the reaction  2NO2 → N2O4 is 1.2• 10-2 s-1 at 45oC. If the concentration of NO2 is O.5 M. what is the half-life of this reac...

Solved • Dec 28, 2016

Identifying Reaction Order

Q. The decomposition of urea (NH 2CONH2), an end product in protein metabolism, occurs according to the following reaction:  NH2CONH2 (aq) + H+ (aq) ...

Solved • Dec 23, 2016

Identifying Reaction Order

Q. What is the half-life of a compound with a concentration of 0.25 M and an observed rate constant of 0.15 min -1?A.  0.038 min B.  0.22 min   C.  0....

Solved • Sep 19, 2016

Identifying Reaction Order

Q. A reaction originally has 0.37 M of a reactant and after 75 seconds there are 0.15 M of the same reactant present.  A plot of the inverse of concen...

Solved • Sep 19, 2016

Identifying Reaction Order

Q. A reaction has a rate constant of 0.0185 s -1 and the only reactant has an initial concentration of 0.135 M. What is the concentration in molarity ...

Solved • Sep 13, 2016

Identifying Reaction Order

Q. The three plots shown were graphed using experimental data for the reaction shown below. Based on the graphs, what is the order of the reaction? 3...

Solved • Aug 25, 2016

Identifying Reaction Order

Q. The rate law for the reaction 3A → 2B is rate = k[A] with a rate constant of 0.0447 h -1. What is the half-life of the reaction?A) 0.0224 hB) 0.064...

Solved • Aug 25, 2016

Identifying Reaction Order

Q. How many half-lives are required for the concentration of reactant to decrease to 12.5% of its original value?A. 3B. 1C. 1.75D. 2.75E. 2 

Solved • Aug 24, 2016

Identifying Reaction Order

Q. The isotope cobalt-60 has a half life of 5.26 years. How long would it take for the decay to be 38.5% complete? a. 3.15 years b. 1.60 years c. 5...

Solved • Aug 24, 2016

Identifying Reaction Order

Q. When it comes to understanding the order of a reaction refer to these helpful tips. 

Solved • Jul 7, 2016

Identifying Reaction Order

Q. The three plots were done based on a chemical reaction. Based on their sketches answer each of the following questions.  What is the order of the r...

Solved • Jul 7, 2016

Identifying Reaction Order

Q. The half-life for the radioactive decay of radium is 1620 years and is independent of initial concentration. What is the initial concentration if i...

Solved • Jul 7, 2016

Identifying Reaction Order

Q. Hydrogen peroxide, H2O2 (aq), decomposes to H2O (l) and O2 (g) in a reaction that has a rate constant equal to 1.06 x 10-3 M1•min-1 at a given temp...

Solved • Jul 7, 2016

Identifying Reaction Order

Q. The half-life of Sr-90 is 28.1 years. How long will it take a 10.0-g sample of Sr-90 to decompose to 0.10 g? a) 80. years b) 140 years c) 190 ye...

Solved • May 17, 2016

Identifying Reaction Order

Q. If the half-life of a reaction is independent of concentration, the reaction can be I first order          II second order          III. zero orde...

Solved • May 9, 2016

Identifying Reaction Order

Q. A plot of reactant concentration as a function of time gives a straight line. What is the order of the reaction for this reactant? (A) zero (B) f...

Solved • May 6, 2016

Identifying Reaction Order

Q. Consider the following reaction: 2 N2O5 (g) → 4 NO2 (g) + O2 (g)      rate = k[N2O5]  If the initial concentration of N2O5 is 0.80 M, the concent...

Solved • May 3, 2016

Identifying Reaction Order

Q. Consider the following reaction: 2 NO2 (g) → 2 NO (g) + O 2 (g)      rate = k [NO 2]2  When the initial concentration of NO2 is 100 mM, it takes ...

Solved • May 3, 2016

Identifying Reaction Order

Q. The experimental data from a certain reaction gives these three graphs. What is the most likely order for this reaction? 

Solved • Apr 26, 2016

Identifying Reaction Order

Q. The activity of a radioisotope is 3000 counts per minute at one time and 2736 counts per minute 48 hours later. What is the half-life of the radioi...

Solved • Apr 26, 2016

Identifying Reaction Order

Q. Given the unit of rate constant ( k ) as mol / (L•s), which one of the following graphs shows the correct relationship between concentration of rea...

Solved • Apr 21, 2016

Identifying Reaction Order

Q. A wooden spear was recently found in what is thought to be a Bronze Age site. Archeologists wish to carbon date the spear to verify that it's from ...

Solved • Apr 6, 2016

Identifying Reaction Order

Q. A student studied the kinetics of the reaction  C2H4(g) → C2H2(g) + H2(g)  by monitoring the C2H4 concentration (in moles/L) as a function of tim...

Solved • Mar 28, 2016

Identifying Reaction Order

Q. The rate constant for the decomposition of N 2O(g) is 1.1×10−3 M-1 sec-1. Assuming that the initial concentration of N2O(g) is 0.2M, which of the f...

Solved • Mar 28, 2016

Identifying Reaction Order

Q. For the reaction: 2N2O5 (g) → 4NO2 (g) + O2 (g) the rate constant is k = 2.8×10 −3 sec −1, if the initial concentration of N2O5 is 1.58 mol/L, th...

Solved • Mar 28, 2016

Identifying Reaction Order

Q. A certain reaction is studied at room temperature, and gives a straight line plot for 1/[reactant] versus time. Which one of the following statemen...

Solved • Mar 28, 2016

Identifying Reaction Order

Q. A certain reaction is studied at room temperature, and gives a straight line plot for 1/[reactant] versus time. What is the order of the reaction? ...

Solved • Mar 28, 2016

Identifying Reaction Order

Q. The rate constant for the reaction 2A → 4B is 6.00×10−3 L mol−1 min−1. How long will it take the concentration of A to drop from 0.75 M to 0.25 M? ...

Solved • Mar 28, 2016

Identifying Reaction Order

Q. Below is a plot of an integrated rate law vs. time. Which of the following could be the correct label for the y-axis? (Circle one)

Solved • Mar 17, 2016

Identifying Reaction Order

Q. A radioactive sample contains 1.55 g of an isotope with a half-life of 3.8 days. What mass of the isotope remains after 5.5 days? A. 0.57g B. 1.0...

Solved • Mar 16, 2016

Identifying Reaction Order

Q. A sample of Th-219 requires 3.84x10 –6 seconds to decay to 1.50 mg. What was the initial mass of the sample? The half-life for Th-219 is 1.05x10 –6...

Solved • Mar 16, 2016

Identifying Reaction Order

Q. How long will it take for 80% of a 1.20mg sample of Rn-220 to decay? The half-life of Rn-220 is 55.6 seconds. A. 17.9 seconds B. 55.6 seconds C....

Solved • Mar 16, 2016

Identifying Reaction Order

Q. How many mg of a 3.50mg sample of Tc-99 will remain after 4 half-lives have passed? A. 0.055mg B. 0.109mg C. 0.219mg D. 0.438mg E. 0.875 mg

Solved • Mar 16, 2016

Identifying Reaction Order

Q. Fluorine-18 undergoes positron emission with a half life of 1.10x 10  2 minutes. If a patient is given a 248 mg dose for a PET scan, how long will ...

Solved • Mar 16, 2016

Identifying Reaction Order

Q. Fill in plots for the following reaction orders. Be sure to label as much as possible (axes, slopes, intercepts). 

Solved • Feb 24, 2016

Identifying Reaction Order

Q. A reaction has a rate constant of 0.0185 s-1 and the only reactant has an initial concentration of 0.135 M. What is the concentration in molarity o...

Solved • Feb 21, 2016

Identifying Reaction Order

Q. Dinitrogen pentoxide (N2O5) decomposes to NO2 and O2 at relatively low temperatures in the following reaction: 2N2O5(aq) → 4NO2(aq) + O2(g) This ...

Solved • Feb 21, 2016

Identifying Reaction Order

Q. For what order reaction does the half-life get longer as the initial concentration increases? A. zeroth order B. first order C. second order D....

Solved • Feb 21, 2016

Identifying Reaction Order

Q. Radioactive dating is used to determine the date of ancient artifacts based on the charactersitics of the 14C isotope. The isotope is highly unstab...

Solved • Feb 21, 2016

Identifying Reaction Order

Q. The half-life for the radioactive decay of radium is 1620 years and is independent of initial concentration. What is the initial concentration if i...

Solved • Feb 21, 2016

Identifying Reaction Order

Q. Hydrogen peroxide, H2O2 (aq), decomposes to H2O (l) and O2 (g) in a reaction that has a rate constant equal to 1.06 x 10 -3 M-1 • min-1 at a given ...

Solved • Feb 21, 2016

Identifying Reaction Order

Q. When a catalyst is added to a reaction, which of the following should happen:Activation                     Energy Rate                     Constan...

Solved • Feb 21, 2016

Identifying Reaction Order

Q. Consider the following reaction: 2NO2(g) →  2NO(g) + O2(g) rate = k[NO2]2 When the initial concentration of NO2 is 100 mM, it takes 55 s for 90% ...

Solved • Feb 8, 2016

Identifying Reaction Order

Q. How many half-lives are required for the concentration of reactant to decrease to 12.5% of its original value?   A) 3 B) 2 C) 2.5 D) 2.75 E) 8

Solved • Feb 2, 2016