Chemistry & Chemical Reactivity
9th Edition
ISBN: 9781133949640
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
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Textbook Question
Chapter 14.3, Problem 1CYU
The initial rate (‒ Δ[NO]/ Δt] of the reaction of nitrogen monoxide and oxygen
NO(g) + ½2O2(g) → NO2(g)
was measured for various initial concentrations of NO and O2 at 25 °C. Determine the rate equation from these data. What is the value of the rate constant, k, and what are its units?
![Chapter 14.3, Problem 1CYU, The initial rate ( [NO]/ t] of the reaction of nitrogen monoxide and oxygen NO(g) + 2O2(g) NO2(g)](https://content.bartleby.com/tbms-images/9781337399074/Chapter-14/images/99074-14.3-14.3cyu-question-digital_image001.png)
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Lanthanum(III) phosphate crystallizes as a hemihydrate,
LAPO4 · H20. When it is heated, it loses water to give
anhydrous lanthanum(III) phosphate:
2(LAPO4 · H2O(s)) → 2 LaPO4 (s) + H20(g)
This reaction is first order in the chemical amount of
LAPO, · H2O. The rate constant varies with tempera-
ture as follows:
Temperature (°C)
k (s-1)
205
2.3 x 10-4
219
3.69 x 10-4
246
7.75 x 10-4
260
12.3 x 10-4
Compute the activation energy of this reaction.
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concentration versus time gives a straight line. The chemical equation for the reaction at this temperature is
C₂H₂OH() C₂H.(g) + H₂O(g)
If the initial concentration of ethanol is 0.022 mol L¹, how long will it take for the pressure to reach 1.4 atm at 328°C?
hours
Assume that the formation of nitrogen dioxide,
2 NO(g) + 02(g) – 2 NO2(g)
is an elementary reaction.
(a) Write the rate law for this reaction. (Rate expressions take the general form: rate = k. [A]ª . [B]b.)
chemPad
О Help
Greek -
rate=k•[NO]2.[02]
rate=k*[NO]^2*[O_2]
Correct.
(b) A sample of air at a certain temperature is contaminated with 1.9 ppm of NO by volume. Under these conditions, can the rate law be simplified? If so, write the simplified rate law. If not, repeat your answer from above.
(Rate expressions take the general form: rate = k . [A]ª . [B]b. Use k' for the new rate constant as needed.)
chemPad
O Help
Greek -
rate=k':[NO]2
rate=k*[NO]^2
Correct.
(c) Under the conditions described in (b), the half-life of the reaction has been estimated to be 6.7x103 min. What would the half-life be if the initial concentration of NO were 12.4 ppm?
4.0
|1030192
X min
Supporting Materials
Periodic Table
Constants and
E Supplemental Data
Chapter 14 Solutions
Chemistry & Chemical Reactivity
Ch. 14.1 - Sucrose decomposes to fructose and glucose in acid...Ch. 14.1 - What are the relative rates of appearance or...Ch. 14.1 - Prob. 1RCCh. 14.1 - 2. Use the graph provided in Example 14.1 to...Ch. 14.2 - 1. Which of the following will not usually...Ch. 14.3 - The initial rate ( [NO]/ t] of the reaction of...Ch. 14.3 - The rate constant, k, at 25 C is 0.27/h for the...Ch. 14.3 - The reaction NO(g) + 1/2 Cl2(g) NOCl(g) is...Ch. 14.4 - Sucrose, a sugar, decomposes in acid solution to...Ch. 14.4 - Gaseous azomethane (CH3N2CH3) decomposes to ethane...
Ch. 14.4 - Prob. 3CYUCh. 14.4 - The catalyzed decomposition of hydrogen peroxide...Ch. 14.4 - Americium is used in smoke detectors and in...Ch. 14.4 - The decomposition of N2O5 is a first-order...Ch. 14.4 - Which of the following will confirm that the...Ch. 14.4 - 3. The equation for the decomposition of NO2(g) at...Ch. 14.5 - Prob. 1CYUCh. 14.5 - The colorless gas N2O4, decomposes to the brown...Ch. 14.5 - Prob. 1RCCh. 14.5 - Prob. 2RCCh. 14.6 - Nitrogen monoxide is reduced by hydrogen to give...Ch. 14.6 - Prob. 2CYUCh. 14.6 - One possible mechanism for the decomposition of...Ch. 14.6 - The rate equation for a reaction A + B C was...Ch. 14.6 - A reaction is believed to occur by the following...Ch. 14.6 - Prob. 1QCh. 14.6 - Prob. 2QCh. 14.6 - Prob. 3QCh. 14.6 - Prob. 4QCh. 14.6 - Prob. 5QCh. 14.6 - Determine the activation energy for the reaction...Ch. 14 - Give the relative rates of disappearance of...Ch. 14 - Give the relative rates of disappearance of...Ch. 14 - In the reaction 2 O3(g) 3 O2(g), the rate of...Ch. 14 - In the synthesis of ammonia, if [H2]/t = 4.5 104...Ch. 14 - Experimental data are listed here for the reaction...Ch. 14 - 6. Phenyl acetate, an ester, reacts with water...Ch. 14 - Using the rate equation Rate = k[A]2[B], define...Ch. 14 - A reaction has the experimental rate equation Rate...Ch. 14 - The reaction between ozone and nitrogen dioxide at...Ch. 14 - Nitrosyl bromide, NOBr, is formed from NO and Br2:...Ch. 14 - The data in the table are for the reaction of NO...Ch. 14 - The reaction 2 NO(g) + 2 H2(g) N2(g) + 2 H2O(g)...Ch. 14 - Data for the reaction NO(g) + O2(g) NO2(g) are...Ch. 14 - Data for the following reaction are given in the...Ch. 14 - The rate equation for the hydrolysis of sucrose to...Ch. 14 - The decomposition of N2O5 in CCl4 is a first-order...Ch. 14 - The decomposition of SO2Cl2 is a first-order...Ch. 14 - The conversion of cyclopropane to propene (Example...Ch. 14 - Hydrogen peroxide, H2O2(aq), decomposes to H2O()...Ch. 14 - The decomposition of nitrogen dioxide at a high...Ch. 14 - At 573 K, gaseous NO2(g) decomposes, forming NO(g)...Ch. 14 - The dimerization of butadiene, C4H6, to form...Ch. 14 - The decomposition of ammonia on a metal surface to...Ch. 14 - Hydrogen iodide decomposes when heated, forming...Ch. 14 - The rate equation for the decomposition of N2O5...Ch. 14 - Gaseous azomethane, CH3N=NCH3, decomposes in a...Ch. 14 - The decomposition of SO2Cl2 SO2Cl2(g) SO2(g) +...Ch. 14 - The compound Xe(CF3)2 decomposes in a first-order...Ch. 14 - The radioactive isotope 64Cu is used in the form...Ch. 14 - Radioactive gold-198 is used in the diagnosis of...Ch. 14 - Prob. 31PSCh. 14 - Ammonia decomposes when heated according to the...Ch. 14 - Gaseous NO2 decomposes at 573 K. NO2(g) NO(g) + ...Ch. 14 - The decomposition of HOF occurs at 25 C. HOF(g) ...Ch. 14 - Prob. 35PSCh. 14 - Prob. 36PSCh. 14 - Calculate the activation energy, Ea, for the...Ch. 14 - If the rate constant for a reaction triples when...Ch. 14 - When healed lo a high temperature, cyclobutane,...Ch. 14 - When heated, cyclopropane is converted to propene...Ch. 14 - The reaction of H2 molecules with F atoms H2(g) +...Ch. 14 - Prob. 42PSCh. 14 - What is the rate law for each of the following...Ch. 14 - What is the rate law for each of the following...Ch. 14 - Ozone, O3, in the Earths upper atmosphere...Ch. 14 - The reaction of NO2(g) and CO(g) is thought to...Ch. 14 - A proposed mechanism for the reaction of NO2 and...Ch. 14 - The mechanism for the reaction of CH3OH and HBr is...Ch. 14 - A reaction has the following experimental rate...Ch. 14 - For a first-order reaction, what fraction of...Ch. 14 - Prob. 51GQCh. 14 - Data for the following reaction are given in the...Ch. 14 - Formic acid decomposes at 550 C according to the...Ch. 14 - Isomerization of CH3NC occurs slowly when CH3NC is...Ch. 14 - When heated, tetrafluoroethylene dimerizes to form...Ch. 14 - Data in the table were collected at 540 K for the...Ch. 14 - Ammonium cyanate, NH4NCO, rearranges in water to...Ch. 14 - Prob. 58GQCh. 14 - At temperatures below 500 K, the reaction between...Ch. 14 - Nitryl fluoride can be made by treating nitrogen...Ch. 14 - The decomposition of dinitrogen pentaoxide N2O5(g)...Ch. 14 - The data in the table give the temperature...Ch. 14 - The decomposition of gaseous dimethyl ether at...Ch. 14 - The decomposition of phosphine, PH3, proceeds...Ch. 14 - The thermal decomposition of diacetylene, C4H2,...Ch. 14 - Prob. 66GQCh. 14 - The ozone in the Earths ozone layer decomposes...Ch. 14 - Hundreds of different reactions occur in the...Ch. 14 - Data for the reaction [Mn(CO)5(CH3CN)]+ + NC5H5 ...Ch. 14 - The gas-phase reaction 2 N2O5(g) 4 NO2(g) + O2(g)...Ch. 14 - Prob. 71GQCh. 14 - The decomposition of SO2Cl2 to SO2 and Cl2 is...Ch. 14 - The decomposition of nitrogen dioxide at a high...Ch. 14 - Prob. 74GQCh. 14 - Egg protein albumin is precipitated when an egg is...Ch. 14 - A The compound 1,3-butadiene (C4H6) forms...Ch. 14 - Hypofluorous acid, HOF, is very unstable,...Ch. 14 - We know that the decomposition of SO2Cl2 is...Ch. 14 - Nitramide, NO2NH2, decomposes slowly in aqueous...Ch. 14 - Prob. 80GQCh. 14 - Prob. 83ILCh. 14 - Prob. 84ILCh. 14 - The oxidation of iodide ion by the hypochlorite...Ch. 14 - The acid-catalyzed iodination of acetone...Ch. 14 - Prob. 87SCQCh. 14 - The following statements relate to the reaction...Ch. 14 - Chlorine atoms contribute to the destruction of...Ch. 14 - Prob. 91SCQCh. 14 - Prob. 92SCQCh. 14 - The reaction cyclopropane propene occurs on a...Ch. 14 - Prob. 94SCQCh. 14 - Examine the reaction coordinate diagram given...Ch. 14 - Draw a reaction coordinate diagram for an...
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